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	<title>Magazine &#8211; Small Arms Review</title>
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	<title>Magazine &#8211; Small Arms Review</title>
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		<title>When Rifles Need a Makeover: SARCO Inc.’s Reproduction G43 Magazine</title>
		<link>https://smallarmsreview.com/when-rifles-need-a-makeover-sarco-inc-s-reproduction-g43-magazine/</link>
		
		<dc:creator><![CDATA[Alton P. Chiu]]></dc:creator>
		<pubDate>Mon, 22 Apr 2024 14:00:00 +0000</pubDate>
				<category><![CDATA[Gear]]></category>
		<category><![CDATA[Articles]]></category>
		<category><![CDATA[Articles by Issue]]></category>
		<category><![CDATA[V23N8 (Oct 2019)]]></category>
		<category><![CDATA[Volume 23]]></category>
		<category><![CDATA[Alton P. Chiu]]></category>
		<category><![CDATA[Gewehr 43]]></category>
		<category><![CDATA[Magazine]]></category>
		<category><![CDATA[SARCO]]></category>
		<guid isPermaLink="false">https://smallarmsreview.com/?p=42426</guid>

					<description><![CDATA[During WWII, the Gewehr 43 (G43) was the German answer to American M1 Garands and Soviet SVT-40s. Along with parts and accessories, the rifle is highly collectible today. SARCO Inc. (Steen Armament Research Company) offers functional reproduction magazines for replacement or to save wear and tear on originals. The company, located in Easton, Pennsylvania, is one of the largest dealers in surplus war materiel in the U.S. The business collaborates with military arms collectors, shooters and military history re-enactors. This article compares a reproduction to an original “gcb” magazine. SARCO’s magazine’s dimensions closely match, and it functions without problems on an AC44 rifle. The markings are close but different enough for collectors to distinguish. However, the magazine catch area has thin metal in one area.]]></description>
										<content:encoded><![CDATA[
<p>Story &amp; Photography by Alton P. Chiu</p>



<p>During WWII, the Gewehr 43 (G43) was the German answer to American M1 Garands and Soviet SVT-40s. Along with parts and accessories, the rifle is highly collectible today. SARCO Inc. (Steen Armament Research Company) offers functional reproduction magazines for replacement or to save wear and tear on originals. The company, located in Easton, Pennsylvania, is one of the largest dealers in surplus war materiel in the U.S. The business collaborates with military arms collectors, shooters and military history re-enactors. This article compares a reproduction to an original “gcb” magazine. SARCO’s magazine’s dimensions closely match, and it functions without problems on an AC44 rifle. The markings are close but different enough for collectors to distinguish. However, the magazine catch area has thin metal in one area.</p>



<div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex">
<div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"><div class="wp-block-image">
<figure class="aligncenter size-full"><img fetchpriority="high" decoding="async" width="952" height="640" src="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Floorplate-copy.jpg" alt="" class="wp-image-42428" srcset="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Floorplate-copy.jpg 952w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Floorplate-copy-300x202.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Floorplate-copy-768x516.jpg 768w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Floorplate-copy-750x504.jpg 750w" sizes="(max-width: 952px) 100vw, 952px" /><figcaption class="wp-element-caption">Reproduction floor plate (top) is virtually indistinguishable from the original (bottom).</figcaption></figure>
</div></div>



<div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"><div class="wp-block-image">
<figure class="aligncenter size-full"><img decoding="async" width="980" height="640" src="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Feedlips-copy.jpg" alt="" class="wp-image-42429" srcset="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Feedlips-copy.jpg 980w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Feedlips-copy-300x196.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Feedlips-copy-768x502.jpg 768w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Feedlips-copy-750x490.jpg 750w" sizes="(max-width: 980px) 100vw, 980px" /><figcaption class="wp-element-caption">Compare feed lip posi-tion between original (top) and reproduction (bottom).</figcaption></figure>
</div></div>
</div>



<h2 class="wp-block-heading">Physical Construction</h2>



<p>The magazine body is dimensionally similar to the original. Despite sharper corners, one can still easily insert and eject the magazine. While feed lips are shifted slightly forward, they fed ammunition without pause.</p>



<p>Externally at the front, the two rivets are solid on the original, while hollow on the reproduction. At the bottom and sides, floorplate lips and over-insertion stops are similar to the original. At the rear, magazine catch differs notably. Two sides of the sheet metal body are folded together to form the spline. This is also where the catch is formed. The reproduction has a notch cut into the inside piece of sheet metal, and the outside piece is seemingly stamped to form the “V” shape. Consequently, there is precious little metal at the apex while magazine internals are exposed to the outside. The original does not feature this opening, and the author could not verify metal thickness at its apex. The SARCO representative reassured that the company has never had issues regarding this construction and has no history of returns.</p>



<div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex">
<div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"><div class="wp-block-image">
<figure class="aligncenter size-large"><img decoding="async" width="1024" height="507" src="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerImpressions-copy-1024x507.jpg" alt="" class="wp-image-42430" srcset="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerImpressions-copy-1024x507.jpg 1024w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerImpressions-copy-300x149.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerImpressions-copy-768x380.jpg 768w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerImpressions-copy-750x372.jpg 750w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerImpressions-copy-1140x565.jpg 1140w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerImpressions-copy.jpg 1292w" sizes="(max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">Reproduction follower (right) has smaller impressions than the original (left).</figcaption></figure>
</div></div>



<div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"><div class="wp-block-image">
<figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="1024" height="459" src="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerTail-copy-1024x459.jpg" alt="" class="wp-image-42431" srcset="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerTail-copy-1024x459.jpg 1024w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerTail-copy-300x134.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerTail-copy-768x344.jpg 768w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerTail-copy-750x336.jpg 750w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerTail-copy-1140x511.jpg 1140w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-FollowerTail-copy.jpg 1429w" sizes="(max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">Reproduction follower tail (right) has splits along the tail section, whereas the original (left) is fully welded.</figcaption></figure>
</div></div>
</div>



<p>Internally, the follower is of the same stamped metal construction as the original. While the stamped bits used to hold the magazine spring is shallower and smaller on the reproduction, there was no functional issue. At the follower tail, the original is fully welded and smooth whereas one can see the splits on the reproduction. Recoil spring is of similar gauge and length, with the same number of wind-ings. The reproduction floor plate is the two-ribbed type, with cuts in the same place, and is interchangeable with the original.</p>


<div class="wp-block-image">
<figure class="aligncenter size-full"><img loading="lazy" decoding="async" width="902" height="640" src="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-MagCatch-copy.jpg" alt="" class="wp-image-42432" srcset="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-MagCatch-copy.jpg 902w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-MagCatch-copy-300x213.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-MagCatch-copy-768x545.jpg 768w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-MagCatch-copy-120x86.jpg 120w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-MagCatch-copy-750x532.jpg 750w" sizes="(max-width: 902px) 100vw, 902px" /><figcaption class="wp-element-caption">Reproduction (left) has an opening at the magazine catch, and the metal there is very thin.</figcaption></figure>
</div>


<h2 class="wp-block-heading">Markings</h2>



<p>The reproduction’s markings are mostly correct but are different enough to allay fears of contaminating genuine pieces. The markings are shallower and lack tell-tale signs of stamping usually observed in originals.</p>



<p>The manufacturer code “gcb” denotes Ad. “Grohmann &amp; Sohn in Würbenthal Sudetenland” is mirrored across both magazines in the same place. However, the original is marked only “K43” while reproduction is marked “G43/K43” in the same place. The original magazine also featured both “WaA892” Waffenamt on the bottom in line with the other markings, while the reproduction magazine placed one just under the front over-insertion stop. Lastly, the original Waffenamt has the alpha-numeric arranged in a slight curve under the Nazi eagle while the reproduction has them straight.</p>



<div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex">
<div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"><div class="wp-block-image">
<figure class="aligncenter size-full"><img loading="lazy" decoding="async" width="511" height="640" src="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Front-copy.jpg" alt="" class="wp-image-42434" srcset="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Front-copy.jpg 511w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Front-copy-240x300.jpg 240w" sizes="(max-width: 511px) 100vw, 511px" /><figcaption class="wp-element-caption">Reproduction (left) has an opening at the magazine catch, and the metal there is very thin.</figcaption></figure>
</div></div>



<div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"><div class="wp-block-image">
<figure class="aligncenter size-full is-resized"><img loading="lazy" decoding="async" src="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Markings-copy-rotated.jpg" alt="" class="wp-image-42433" width="459" height="660" srcset="https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Markings-copy-rotated.jpg 640w, https://smallarmsreview.com/wp-content/uploads/2023/05/2416-Markings-copy-208x300.jpg 208w" sizes="(max-width: 459px) 100vw, 459px" /><figcaption class="wp-element-caption">Reproduction (<em>right</em>) and original (<em>left</em>) markings.</figcaption></figure>
</div></div>
</div>



<h2 class="wp-block-heading">Function and Conclusion</h2>



<p>SARCO’s reproduction magazine functions without hic-cups in the test rifle, a Walther 1944 manufacture (AC44). It locks into place with no undue wobble and removes cleanly with the magazine release depressed. Using Yugo-slav surplus 198-grain ammunition, it feeds reliably from the first to the last round. These reproductions represent viable, functional replacements while marked closely enough for passing inspection—the clear differences prevent pollution.</p>



<h2 class="wp-block-heading">FOR MORE INFORMATION</h2>



<p>SARCO Inc. <a href="http://e-sarcoinc.com" target="_blank" data-type="URL" data-id="e-sarcoinc.com" rel="noreferrer noopener"><strong>e-sarcoinc.com</strong></a></p>



<figure class="wp-block-table aligncenter is-style-stripes"><table><tbody><tr><td class="has-text-align-center" data-align="center"><em>This article first appeared in Small Arms Review V23N8 (Oct 2019)</em></td></tr></tbody></table></figure>
]]></content:encoded>
					
		
		
			</item>
		<item>
		<title>RUGER 1022 HI-CAPACITY MAGAZINE EVALUATION FORTY YEARS OF RIMFIRE FIREPOWER INNOVATION</title>
		<link>https://smallarmsreview.com/ruger-1022-hi-capacity-magazine-evaluation-forty-years-of-rimfire-firepower-innovation/</link>
		
		<dc:creator><![CDATA[SAR Staff]]></dc:creator>
		<pubDate>Sat, 16 Apr 2011 20:03:00 +0000</pubDate>
				<category><![CDATA[Articles]]></category>
		<category><![CDATA[Articles by Issue]]></category>
		<category><![CDATA[Gear]]></category>
		<category><![CDATA[Guns & Parts]]></category>
		<category><![CDATA[Search by Issue]]></category>
		<category><![CDATA[V14N7 (Apr 2011)]]></category>
		<category><![CDATA[Volume 14]]></category>
		<category><![CDATA[2011]]></category>
		<category><![CDATA[50/22]]></category>
		<category><![CDATA[Arcadia Machine & Tool Company]]></category>
		<category><![CDATA[J.M. Ramos]]></category>
		<category><![CDATA[Magazine]]></category>
		<category><![CDATA[Mitchell Arms]]></category>
		<category><![CDATA[MWG 50 shot magazine]]></category>
		<category><![CDATA[Rimfire]]></category>
		<category><![CDATA[Ruger 10/22]]></category>
		<category><![CDATA[V14N7]]></category>
		<guid isPermaLink="false">https://dev.smallarmsreview.com/?p=17412</guid>

					<description><![CDATA[The year 1994 will be remembered by many as the dark cloud that brought the dreaded &#8220;Assault Weapon&#8221; ban in the paramilitary market among civilian shooters. This controversial law killed importation of sporterized military type weapons and their rimfire look-alikes. The fallout soon affected many independent aftermarket accessory producers solely dedicated to the development and [&#8230;]]]></description>
										<content:encoded><![CDATA[
<div style="height:10px" aria-hidden="true" class="wp-block-spacer"></div>



<p>The year 1994 will be remembered by many as the dark cloud that brought the dreaded &#8220;Assault Weapon&#8221; ban in the paramilitary market among civilian shooters. This controversial law killed importation of sporterized military type weapons and their rimfire look-alikes. The fallout soon affected many independent aftermarket accessory producers solely dedicated to the development and production of hi-capacity magazines, folding stocks and dress up kits for sporting arms to eventually close their doors after their pre ban hardware was depleted. Owners of sub guns and hi-capacity guns and look-alikes saw the value of their wares climb sky high overnight and lasted for a decade. The Clinton ban finally sunset in 2004 marking the beginning of yet another era in the hi-tech weapons development geared for both military and civilian market. Back once again are the high capacity magazines for short and long arms, dress up kits and folding stocks as well as few rimfire look-alikes of the golden 80s. Regretfully, the big difference this time is that not all states have been freed from this bureaucracy as legislators in anti-gun strongholds opted to live with the restriction and are likely to stay with it for an indefinite period of time.</p>



<p>When hi-tech exotic weaponry first entered the scene back in the 80s, its primary goal was to fill the enormous demand in transforming semi-auto sporting arms to military format. Aftermarket accessories for the very popular Ruger 10/22 self-loading carbine undoubtedly stirred more money-making innovations among independent manufacturers than any other models ever produced in the American market. Hi-capacity magazines for this gun became the hottest selling item to date followed by folding stocks and dress up kits. Bill Ruger&#8217;s masterpiece self-loader is unquestionably one of the most advanced and sophisticated U.S. made rimfire carbine in the world. With nearly five million produced to date, no other model in its class will ever come close. This gun is as hot a seller today as it was when it was first introduced 42 years ago. Out of the box, the 10/22 can be best described as a subtle cross-breed between a sporter with just a slight dash of the famed M1 .30 Carbine with the absence of the clip sticking out below the gun. Perhaps, the hottest selling point of the gun is its unmatched reliability and ruggedness as compared to other models in its class that are many times more expensive. The ten-round rotary magazine of the 10/22 is a masterpiece of design as well as reliability. However, for a more serious defensive application, its limited firepower becomes an issue. It is a pure fun gun that barely encounters any malfunction; but its limited capacity keeps the fun a bit too short, especially when used by paper punchers and plinkers. In today&#8217;s standard, a ten-round magazine is considered a handicap, particularly for a self loading carbine designed to be a work horse. Selling the 10/22 is no problem and is always the first one to leave the dealer&#8217;s shelves. The maker has a hard time catching up with the demand of seemingly never ending orders. The main problem confronting the dealers is supplying their 10/22 customers with the demand for a truly reliable large capacity magazine that can equal the factory produced magazine in overall reliability. Whether Ruger ignored the idea of developing this device for their bread and butter gun or simply hadn&#8217;t time for it, still remains a mystery. One thing for sure however, it has left an open market for a very desirable item.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="750" height="527" src="https://smallarmsreview.com/wp-content/uploads/2021/02/001-118.jpg" alt="" class="wp-image-17419" srcset="https://smallarmsreview.com/wp-content/uploads/2021/02/001-118.jpg 750w, https://smallarmsreview.com/wp-content/uploads/2021/02/001-118-300x211.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2021/02/001-118-600x422.jpg 600w" sizes="(max-width: 750px) 100vw, 750px" /><figcaption><em>An RB Precision Evolution tactical 10/22 carbine with Butler Creek 25-shot banana type magazines. These magazines are available with metal or plastic feed lips. They are offered with smoke or clear plastic housing.</em></figcaption></figure></div>



<p>The mid 80s opened the door to many private entrepreneurs who entered the race in the development and production of hi-capacity magazines for this hot selling little carbine. The first contender to enter the market was the ill fated Condor. In its first month, the 25-shot plastic magazine was a sensation. A month after, customers who bought it cursed it to the moon. In a desperate bid to calm down the complaining buyers, the manufacturer enclosed a small instruction sheet, suggesting that the buyer has to throat the barrel until it works. Nice try, but this didn&#8217;t solve the problem. A few months later, the company closed. The Condor was followed by the Sanford-50, a drum type magazine boasting an impressive 50-shot firepower. This magazine was marketed by Eaton Supply. This item was also offered by Arcadia Machine &amp; Tool Company (AMT) as an optional accessory for their &#8220;Lightning,&#8221; a stainless steel clone of the 10/22. The Sanford-50 gives the gun and awesome look and feeling of confidence seeing the large number of rounds neatly stack around the rim of the clear plastic housing. The Sanford drum is the first 10/22 magazine to feature a see-through viewing using clear Lexan plastic for its exterior casing. The magazine also features a loading gate wherein the ammo spool can be manually turned while loading. This excellent feature makes for easy loading advantage by simply dropping the rounds into the feed lips, while turning the spool. The magazine lip is made of cheap cast zinc oxide material that is somewhat fragile and out of dimension. The Lexan plastic easily cracked in its rear half casing when accidentally dropped to no higher than a foot on a wooden floor.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="750" height="450" src="https://smallarmsreview.com/wp-content/uploads/2021/02/002-109.jpg" alt="" class="wp-image-17422" srcset="https://smallarmsreview.com/wp-content/uploads/2021/02/002-109.jpg 750w, https://smallarmsreview.com/wp-content/uploads/2021/02/002-109-300x180.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2021/02/002-109-309x186.jpg 309w, https://smallarmsreview.com/wp-content/uploads/2021/02/002-109-600x360.jpg 600w" sizes="(max-width: 750px) 100vw, 750px" /><figcaption><em>An oddity among the various hi-capacity magazines offered for the 10/22 in the 1980s was this Taylor 30-shot all steel banana type magazine made in Italy. It uses a special adapter that locks into place in lieu of the factory rotary type magazine.</em></figcaption></figure></div>



<p>Did the Sanford 50 work? Unfortunately this is another matter. During the test, this awesome looking drum proved to be a great pretender. It develop multiple loading problems with hang-ups leaving the chamber empty because the next round for battery got stuck halfway below the feed line and was not scooped up by the bolt during the loading cycle. It was also plagued by ejection problems with empties barely clearing the ejection port. When the magazine is loaded to capacity, the spool is slower than a turtle walk, leaving no round positioned in the magazine lip when the bolt passes through resulting in an empty chamber. With just about ten rounds remaining in the magazine, the tension of the clock-type spring becomes erratic, causing the top round in the magazine lips to occasionally jump out of its seat. This causes a loading jam with the cartridge caught between the breech face and barrel chamber in an almost vertical position, with the tip of the bullet lodge in the chamber mouth. As much as the quick and easy loading feature of the Sanford drum was a big plus, it failed miserably with every type of ammunition used. A few years later a new version of the Sanford drum was produce and marketed by Pro-Mag. Gone was the see-through Lexan material being replaced by what appears to be an unbreakable material. Externally, the Pro-Mag drum appears solid and impressive. This first impression quickly changed during the actual test firing. Pro-Mag made the same mistake as on the first Sanford construction by using a soft metal instead of steel in the magazine lips. After the last round is fired, the bottom section of the breech face that pushes the cartridge to the chamber is hitting the top of the magazine feed ramp and deforming quite easily. Another fatal flaw of the design is the very short protrusion of the round metal in front of the magazine that connects to the receiver. When the gun is fired, the magazine tends to disengage and fall off the gun since this part of the magazine is barely engaging the gun. The magazine connection to the receiver is loose and it tends to rock back and forth when it is seated to the gun. The overall reliability of the gun is acceptable when using solid point cartridges; however the magazine must be supported by the non-shooting hand while the gun is being fired to prevent the magazine from falling off. The forward racking action of the magazine as the bolt moves forward when not supported by hand tends to jam the cartridge nose against the edge of the chamber as it is being pushed out of the magazine lips. The Pro-Mag 50 is far from being perfect. It definitely needed more refinements on the above noted areas of concern. Next in the market was the Black Dog 50-shot polymer drum magazine for the 10/22. This magazine looks promising and is very well made as compared to both the Sanford and Pro-Mag drums. The Black Dog version appears to have borrowed some features from the Sanford employing a back window to access the winding mechanism as well as its clock-type spring. However, its inherent reliability can be attributed to the features borrowed from the Italian made Bingham PPS-50 steel drum design incorporating plastic dummy cartridges as part of the magazine follower system. The PPS-50 drum magazine is possibly the finest 50-shot drum magazine ever made and Black Dog certainly made a great choice in employing its design characteristics. The Black Dog drum works best with solid point ammo. When hollow points are used there is an average of 3-4 jams per mag.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="750" height="572" src="https://smallarmsreview.com/wp-content/uploads/2021/02/003-106.jpg" alt="" class="wp-image-17423" srcset="https://smallarmsreview.com/wp-content/uploads/2021/02/003-106.jpg 750w, https://smallarmsreview.com/wp-content/uploads/2021/02/003-106-300x229.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2021/02/003-106-600x458.jpg 600w" sizes="(max-width: 750px) 100vw, 750px" /><figcaption><em>The Mitchell 50/22 “Teardrop” shape magazine (left) compared to the new MWG version (right) with their back cover removed showing the unique internal belt feed design and loading process.</em></figcaption></figure></div>



<p>The quick demise of the old Condor magazine was quickly followed by yet another 25-shot all plastic banana magazine called the Eaton. Both the Condor and Eaton are virtually identical except the Condor utilized steel feed lips while the Eaton is an all plastic construction. Is this the improved Condor? During testing, three Eaton banana-type magazines were used. For a while, the magazines seemed to work fine but after 300 rounds were fired, malfunctions started to appear. The follower started to get tight and loading problems become frequent. The ejector shoulder on the magazine lip started to wear out fast causing frequent ejection problems. It appears that the plastic material used is not geared for this type of device. One time during the test, a rim blow-up occurred while firing a Remington Yellow Jacket hi-velocity cartridge. The unsupported section below the breech face diverted the exploding gas towards the magazine forcing it to disengage from its seat. As a result, the small protruding section that engages the magazine catch at the back of the magazine broke off, rendering the magazine totally unserviceable. As the Eaton magazine fell off the gun, it split into two halves as it hit the ground scattering the remaining ammo during impact. The two halves appear not to be bonded together. The Eaton 25-shot magazine is a standard item for the AMT Lightning when it entered the commercial marketed in the 1980s. Interestingly, Black Dog resurrected the Eaton magazine design as one of the primary offering in the banana type magazine market. While the early Eaton magazine are made to 1980&#8217;s standard, the new Black Dog version is much refined employing unbreakable polymer materials in their overall construction.</p>



<p>The new and much touted Butler Creek 25-shot &#8220;Steel Lips&#8221; magazine appears to bear a strong heritage to the old Condor magazine in overall design and construction. The difference between the two is that the Steel Lips works and the Condor doesn&#8217;t. By close examination, there are subtle differences between the original Condor and Steel Lips primarily in the feed lip and follower design. The exterior format is virtually identical between the two, however, the Butler Creek magazine proved to be far superior to the Condor in both quality of workmanship and reliability. The Steel Lips works reliably as long as it is kept clean. However, once the inside is exposed to heavy powder residue built up after prolonged use, the follower tends to hang up and will not push the cartridges upward leaving an empty chamber. The Steel Lips was also offered in all plastic format called the Hot Lips (clear plastic) and are both available in ten and 25-shot capacity. Three ten-shot version can be clipped together to form a unique &#8220;Star&#8221; shape configuration for a 30-shot firepower. In addition to its excellent magazines, Butler Creek also produced and marketed a very compact loading device for their magazines. Unfortunately, this loader will not work with other brands due to their different magazine lip opening.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="750" height="490" src="https://smallarmsreview.com/wp-content/uploads/2021/02/004-100.jpg" alt="" class="wp-image-17424" srcset="https://smallarmsreview.com/wp-content/uploads/2021/02/004-100.jpg 750w, https://smallarmsreview.com/wp-content/uploads/2021/02/004-100-300x196.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2021/02/004-100-600x392.jpg 600w" sizes="(max-width: 750px) 100vw, 750px" /><figcaption><em>Close-up view of the cracks on the upper section of the MWG 50 shot magazine, a new manufactured version of the vintage Mitchell design (bottom). After 30 years of regular usage, the Mitchell is still intact and working while the MWG housing is fragile.</em></figcaption></figure></div>



<p>Yet another 50 rounder entered the scene. This one has a unique teardrop type configuration. This magazine was originally marketed by Mitchell Arms designated as the 50/22. It was given good advertising and publicity when first introduced. Class II manufacturers for the 10/22 were also at its peak during this period. It was hoped that the Mitchell magazine was the final answer to the long search for a reliable hi-capacity magazine in their full auto wares. Two magazines were ordered with the same expectation. Unfortunately, after few try outs, the enthusiasm towards the Teardrop magazine quickly faded away. This device does not load to capacity without jamming. The drive belt is prone to hang-ups, just like the spool design of the Sanford drum. Worst of all, the Mitchell magazine has the shallowest ejector shoulder of all the hi-cap contenders tested. As expected, ejection problems plagued this magazine next to feeding hang-ups, caused by frequent stopping action of the drive belt. The Mitchell 50/22 has good possibility to be a top contender in the 50-round category once all the bugs are ironed out.</p>



<p>Twenty two years after its initial introduction, the Mitchell teardrop magazine once again came to life in the form of the new MWG 50-Rounder. This author was quite skeptical whether the MWG version was any better than the original despite the flowery advertising. The MWG is not cheap retailing at $80 but was not as expensive as the Pro-Mag drum which at one time sold for $100. Nevertheless, two of this new version was purchased for testing. As usual, prior to the actual reliability test, a visual comparison between the old and the new was made. The first thing noticed was the belt clip on the old Mitchell magazine was omitted on the MWG. The new version sported an all clear plastic construction in its shell casing versus the two-tone plastic of the old. Further examination revealed that the new MWG incorporated identical steel feed lips to the factory rotary magazine, while the Mitchell design had a narrow ejector and slightly different cutouts in the release point of the lip area. Internally, everything seemed to be identical except for the new type of material used in the loading belt. The old type has some sort of strands coming off the belt while the new one is clean. Range testing consisted of 500 rounds of Stinger and two 10/22s for heavy duty workout. Out of the 500 rounds fired, only three malfunctions were experienced which occurred only when the magazines were fully loaded. One of the 10/22s has an extra power recoil spring purchased from Brownell&#8217;s. The other has the standard factory recoil spring, which is basically tailored to work with their magazine. The bolt seems to have difficulty pushing the top round from the magazine lip, which is under heavy tension with the factory standard recoil spring. However, with the heavier recoil spring, the magazine worked flawlessly with 300 rounds fired. That is quite impressive. Finally, a 50-round magazine for the 10/22 that really works. MWG has indeed done their homework on this one. So what makes the MWG work and not the Mitchell? After stripping both the Mitchell and MWG magazines, the only valid explanation as to why one works and the other don&#8217;t is the difference in magazine lips. To test my theory, I switched the magazine lips on both magazines and retested both. The MWG, now having the lips of the old Mitchell, did not work. The Old Mitchell, now with the new magazine lips of the WMG, worked very well. Now on the right track, the metal lips were borrowed from two factory magazines and installed them on the old Mitchell magazines. They fit perfectly, and at last, worked perfectly. Puzzle solved. Why Mitchell did do not use identical lips as the factory rotary magazine to begin with is a mystery. Unfortunately, such good things do not last. Barely two months after getting the new MWG magazines, with just over 1,000 rounds being used in each mag, cracks started to appear on the top of the magazine just around the cap nut that controls the tension of the upper half of the belt. In addition, the bottom of the magazine housing also exhibited multiple cracks now rendering this expensive magazine totally unserviceable. Nevertheless, the old Mitchell mags are very much intact and still working great after their defective magazine lips were replaced with original Ruger parts. If MWG changes the housing with a better material that does not crack easily, I may but them again. For now, they work, but they don&#8217;t last very long.</p>



<p>Just at the time when more and more large capacity magazines were starting to flood the market for the 10/22, Bingham Ltd. of Norcross, Georgia introduce an all steel 30-shot banana type magazine of Italian manufacture. Bingham at this time was busy promoting its upcoming PPS-50, a rimfire clone of the famed WW II Russian PPSh burp gun. The Bingham magazine is very well made. A magazine adapter was utilized to compensate for the wide opening of the stock&#8217;s magazine chute for the factory rotary type magazine. The Italian magazine produces only marginal reliability, however. It also suffered multiple ejection and loading problems when fully loaded. It worked best with only 25 rounds loaded to give the spring and follower more leverage for movement. The magazine lip appears easily deformed and needs to be re-adjusted from time to time, especially the built-in ejector to minimize ejection problems. The magazine also tends to disengage accidentally from its adapter during firing. To correct this drawback, the writer installed built-in spring loaded plungers positioned on both sides of the adapter. The protruding ends of the plungers locks securely on their corresponding detent holes at the front of the trigger housing.</p>



<p>For few years, the Sanford, Eaton and Mitchell magazines dominated the 10/22 hi-capacity market despite their shortcomings. In the later part of the 80&#8217;s Ram-Line and Eagle International, both based in Colorado at that time, set to compete in this open market. Eagle International introduced a very attractive 30-shot banana type polymer magazine in both smoke and black color. The Eagle has a few interesting design features not found in any magazine in its class. It features a built-in magazine catch activator that is more convenient to operate than the factory flush-in catch if a high capacity magazine is used. The bottom of the magazine had a sliding trap door that would allow internal cleaning if needed. There were notable malfunctions experienced with the Eagle that occurred mostly after several thousands of rounds had gone through it. The magazine lips appeared to have opened up and caused the top round to jump out of its seat when firing hi-velocity rounds, particularly Stingers. A custom nylon buffer will help alleviate this problem by softening the recoil impact. When new, this magazine worked quite well with very few malfunctions noted. The Eagle magazine is available again and now offered in various colors ranging from black, smoke, orange and clear. This magazine not only proved to be one of the more reliable 30-rounders available in the market today, it is also one of the cheapest with some retailers selling them for as low as $10.</p>



<p>Perhaps, among the half dozen or more independent aftermarket accessory producers, no one can claim the top spot in the development and manufacture of hi-capacity magazines in the banana type category than Ram-Line. Famous for their extensive line of fixed and folding stocks made of indestructible polymer material and dress up kits, the Colorado based company has undoubtedly offered more selections of banana-type magazines than anyone else in the industry. Their first 30-round single stack magazines are the most reliable in their lineup. I still have five of these which I have extensively used in the past 20 years and they still work as good as when they were new. These magazine were soon followed by the more sophisticated double stack versions that were offered in 15, 20, 30, and 50-shot capacity, as well as a 25-shot single stack magazine called &#8220;Truncator&#8221; designed to work primarily with truncated type ammo such as the Remington Yellow Jacket. Ram-Line can be credited to the final breakthrough in creating a double column type magazine, something thought impossible at one time with .22 rimfire ammunition. These double stack format magazines however are very hard to load due to their very powerful dual clock type springs. To solve this problem, the company developed an autoloader device that can load the magazine almost as fast as you can shoot it. Unfortunately, as good as it sounds, the loader does not always work reliably. Their double stack magazines are also subject to this type of criticism. I have a dozen of this magazine that I acquired back in the late 80s. Out of twelve, half actually worked as long as they were not loaded to capacity and with certain type of ammo. Winchester Super-X appears to work best with these mags. The others have varying problems that I can attribute to excessive spring power of the follower. The most common problems encountered with this type of magazine is the tendency of the top round&#8217;s front end to lift itself up to almost 50 degrees as the bolt hits the back of the receiver during recoil. As the bolt comes back to battery, the lower end of the breech face that normally scoops the cartridge will miss the rim (now below the feed line) and instead glides over the lifted front end of the bullet, scraping it and finally stopping as the breech face dug deeper into the bullet nose. Another frequent malfunction using this magazine is the tendency of the bullet nose to hit the upper section of the chamber mouth as it is being pushed by the bolt towards the chamber. Again, the excessive magazine spring power appears to be the culprit here. There seems to be imbalance in the distribution of spring tension with much of the pressure directed to the front end of the follower. It is this author&#8217;s opinion that Ram-Line should have combined a full power spring and a half power spring rather than using two full power springs to make the system work reliably &#8211; and it would also make loading easier.</p>



<figure class="wp-block-table aligncenter is-style-stripes"><table><tbody><tr><td class="has-text-align-center" data-align="center"><em>This article first appeared in Small Arms Review V14N7 (April 2011)</em></td></tr></tbody></table></figure>
]]></content:encoded>
					
		
		
			</item>
		<item>
		<title>HISTORY OF THE THOMPSON DRUM MAGAZINE</title>
		<link>https://smallarmsreview.com/history-of-the-thompson-drum-magazine/</link>
		
		<dc:creator><![CDATA[SAR Staff]]></dc:creator>
		<pubDate>Tue, 01 Nov 2005 00:27:47 +0000</pubDate>
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		<category><![CDATA[Thompson]]></category>
		<category><![CDATA[THOMPSON DRUM MAGAZINE]]></category>
		<category><![CDATA[Tracie L. Hill]]></category>
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		<guid isPermaLink="false">https://dev.smallarmsreview.com/?p=4048</guid>

					<description><![CDATA[By Tracie L. Hill For years Thompson collectors have debated the history of when and who manufactured the various drum magazines. However, never before now has definitive information been available for historical review. This article, in part, is based on letters and correspondence between Auto-Ordnance personnel and the various concerns manufacturing the drums. The later [&#8230;]]]></description>
										<content:encoded><![CDATA[
<p><em>By <strong>Tracie L. Hill</strong></em></p>



<p>For years Thompson collectors have debated the history of when and who manufactured the various drum magazines. However, never before now has definitive information been available for historical review. This article, in part, is based on letters and correspondence between Auto-Ordnance personnel and the various concerns manufacturing the drums. The later discussion on production during World War II is based on information from the National Archives.</p>



<p>At this point it is important to explain a few definitions of terms used in this article. First, the word “mismatched.” This term refers to drum magazines with covers and bodies that are either not matching in serial number or have different manufacturers’ parts. As an example, a United Specialties cover with a Crosby body assembly would be considered a mismatched drum. Second, a “transitional drum” is a drum which has a body and cover assembled by the same manufacturer that is using the remaining parts of one production in the beginning of another. As anyone who has ever worked in a production facility knows, you try to use up the remaining inventory from a prior production run prior to using new production; this is the most economical use of leftover stock. For the collector, these are very important drums as they can tell the historical order of various production runs.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="255" src="https://smallarmsreview.com/wp-content/uploads/2020/08/001-49.jpg" alt="" class="wp-image-8924" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/001-49.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/001-49-300x109.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption><em>Model of 1919 “Persuader,” the first hand-held Thompson Sub Machine Gun. The tube area above the magazine well is the sprocket drive for the belt feed system for this arm. </em><br><em>(<strong>West Point Military Museum</strong>)</em></figcaption></figure></div>



<p>Originally, the first ammunition feed device to be tried was a cloth belt. However, after several trial mechanisms failed to prove reliable, the Colt Model of 1911 box magazine was pressed into service. Both General Thompson and Theodore Eickhoff were very familiar with these magazines from when they worked together in the US Army Small Division. General Thompson was in charge of the development of not only the .45 caliber cartridge, but also the trials for the new Model of 1911 Colt service pistol.</p>



<p>The first Annihilator I, serial number one, was designed to have “wings” on the receiver to handle several Colt magazines in a line. Later, the engineers designed the twenty round box magazine for serial number one. The first design required the use of an adaptor to hold the box magazine in position.</p>



<p>Oscar Payne was assigned the task of designing a larger capacity magazine. After several initial designs that were unsuccessful, he created the “Spiral Drum Magazine.” The first of these Spiral Drums used a removable crank handle to wind the drum spring. This design was quickly abandoned in favor of the now familiar winding key. These very early designs, both failures and successful, were in all likelihood made in the Auto-Ordnance Engineering Department’s own machine shop at 6536 Carnegie Ave., Cleveland, Ohio.</p>



<figure class="wp-block-gallery aligncenter columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex"><ul class="blocks-gallery-grid"><li class="blocks-gallery-item"><figure><img loading="lazy" decoding="async" width="436" height="700" src="https://smallarmsreview.com/wp-content/uploads/2020/08/002-58.jpg" alt="" data-id="8925" data-full-url="https://smallarmsreview.com/wp-content/uploads/2020/08/002-58.jpg" data-link="https://smallarmsreview.com/index.php/2005/11/01/history-of-the-thompson-drum-magazine/002-58-4/#main" class="wp-image-8925" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/002-58.jpg 436w, https://smallarmsreview.com/wp-content/uploads/2020/08/002-58-187x300.jpg 187w" sizes="(max-width: 436px) 100vw, 436px" /></figure></li><li class="blocks-gallery-item"><figure><img loading="lazy" decoding="async" width="439" height="700" src="https://smallarmsreview.com/wp-content/uploads/2020/08/003-56.jpg" alt="" data-id="8926" data-full-url="https://smallarmsreview.com/wp-content/uploads/2020/08/003-56.jpg" data-link="https://smallarmsreview.com/index.php/2005/11/01/history-of-the-thompson-drum-magazine/003-56-3/#main" class="wp-image-8926" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/003-56.jpg 439w, https://smallarmsreview.com/wp-content/uploads/2020/08/003-56-188x300.jpg 188w" sizes="(max-width: 439px) 100vw, 439px" /></figure></li></ul><figcaption class="blocks-gallery-caption"><span style="text-decoration: underline;"><strong>Above Right</strong></span>: <em>A first generation drum magazine. </em><span style="text-decoration: underline;"><strong>Above Left</strong></span>: <em>A second generation drum magazine. Both styles required the drum to be wound prior to ammo being loaded. When the cover was closed and locked, a finger on the cover released the paw holding the rotor spring powering the feed system.</em></figcaption></figure>



<p>However, once a successful design was finalized, they turned to a local company to help with the manufacturing of production quantities. The company was John’s Machine and Stamp Works Company in Cleveland, Ohio. With John’s Co., Auto-Ordnance’s Engineering Department went about the tedious and time consuming job of producing drawings for each part of the C and L drums. From these documents were created the tooling to manufacture the XX box, C and L drum magazines.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="685" src="https://smallarmsreview.com/wp-content/uploads/2020/08/004-55.jpg" alt="" class="wp-image-8928" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/004-55.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/004-55-300x294.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption>third generation drum magazine. This is the earliest known “C” (meaning hundred round) <em>drum magazine; a number six is stamped on the drum face. This drum’s interior is very similar to that of later production C drums but, the drum is wound up using a removable crank handle on the back of the drum. The crank handle was replaced in production designs with a winding key attached to the front face. (<strong>West Point Military Museum</strong>)</em></figcaption></figure></div>



<p>All of the formed metal parts were made by John’s Co. The rotor springs were ordered from Wallace Barnes Co., Bristol, Conn. Wallace Barnes supplied the springs to Auto-Ordnance clear through to United Specialties production in 1939.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="581" src="https://smallarmsreview.com/wp-content/uploads/2020/08/005-44.jpg" alt="" class="wp-image-8930" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/005-44.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/005-44-300x249.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption><em>Production process sheet for the front face plates on the drum magazines produced by John’s Machine and Stamp Works Company.</em></figcaption></figure></div>



<div style="height:20px" aria-hidden="true" class="wp-block-spacer"></div>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="537" height="700" src="https://smallarmsreview.com/wp-content/uploads/2020/08/006-30.jpg" alt="" class="wp-image-8931" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/006-30.jpg 537w, https://smallarmsreview.com/wp-content/uploads/2020/08/006-30-230x300.jpg 230w" sizes="(max-width: 537px) 100vw, 537px" /><figcaption><em>Partial listing of tooling produced by John’s Machine and Stamp Works for magazine production.</em></figcaption></figure></div>



<p>By the end of November 1920, the partnership with John’s had produced 205 sample C drums at a cost of $871.17, 200 sample L drums at a cost of $180.69 and 506 sample XX box magazines at a cost of $327.70. The cost of the tooling for these samples totaled $48,994.28. This included 14 sets of dies to produce the XX box magazine, 40 sets for the C drum and 36 sets for the L drum. Some of the sets of dies were used to produce common parts for both the C and L drum. For example, the winding keys, rotor retaining clip, body and face plates, etc, are common to both drums. Later, John’s Co. would also be tooled to produce the felt pad oiler system for the TSMG.</p>



<p>It appears that John’s Co. was also assembling the drums after forming of all the individual pieces. This assembly was being closely overseen by the Auto-Ordnance personnel to assure quality. The first drums produced by John’s were of the type found in the accessories that accompanied Model of 1919, serial number 17. These drums are a bright blued finish with the serial numbers stamped into the face plates and the rotor. Markings for instructions are vibra etched into the face plates.</p>



<p>The second version is the first drums to have stamped information on the face plates. The rear face plate contains the winding information and has a stamped “No.” location for the etched serial number. These were the drums available when Colt’s began production of the Model of 1921. According to a report by Theodore Eickhoff, dated January 4, 1921, 4,000 of each drum (C and L) have been produced to date.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="402" src="https://smallarmsreview.com/wp-content/uploads/2020/08/007-25.jpg" alt="" class="wp-image-8933" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/007-25.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/007-25-300x172.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption><em>A first generation John’s “Type C” drum with a bright blued surface, stamped serial number 13 and vibra etched winding instructions on the front face. This drum was sent along with Model of 1919 s/n 17 as a salesman’s kit in the early 1920’s.</em></figcaption></figure></div>



<p>It is at this point that the John’s Co. drums start to have the dull blued finish applied to them. This is a second generation John’s C drum, but with the grit blast finish applied by Colt’s prior to blueing. With this grit blasting, any information of the face plates that was not deeply stamped would not be visible. Therefore, the etched information was not used and the winding information was still stamped into the back face plates.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="631" src="https://smallarmsreview.com/wp-content/uploads/2020/08/008-20.jpg" alt="" class="wp-image-8934" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/008-20.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/008-20-300x270.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption><em>A second generation John’s “Type C” drum with a bright blued surface, stamped winding instructions of the back face plate and vibra etched serial numbers (s/n 47).</em></figcaption></figure></div>



<p>As production of the guns began, the winding information is still on the back side and the serial numbers are now restarted and stamped, such as serial number one. As production continued, some time within the first hundred drums, the winding information on the back face is moved to the front face and patent and address information for Auto-Ordnance is stamped into the rear. The surface of the drum is still grit blasted and blued. The serial number (which is actually an assembly number only) is stamped into the front and rear face plates.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="354" src="https://smallarmsreview.com/wp-content/uploads/2020/08/009-18.jpg" alt="" class="wp-image-8935" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/009-18.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/009-18-300x152.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption><em>The next evolutionary change is this third generation Type C drum which has the surface finish grit blasted prior to blueing. This finish gives the drums the almost parkerized look to them. Notice the faces have no vibra etched information which would not have survived the grit blasting, but they do have the stamped winding information on the back face plate; yet, no stamped serial number.</em></figcaption></figure></div>



<p>It was costing Auto-Ordnance approximately $5.54 each to make a C drum plus an additional .85 cents for Colt’s to grit blast and blue. The L drums were costing $3.54 each plus the additional cost of .65 cents for Colt’s work. So from these new records it seems that all variations of the C drum were produced by John’s Machine and Tool Co.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="431" src="https://smallarmsreview.com/wp-content/uploads/2020/08/010-13.jpg" alt="" class="wp-image-8936" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/010-13.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/010-13-300x185.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption><em>The first “Production” Type C drum with the winding instructions still stamped onto the back face plate. The serial numbering was restarted at serial number 1.</em></figcaption></figure></div>



<p>There is still the question, “How many were made?” The highest number seen on a C drum to date is about serial number 5,000. But, this does not mean that only 5,000 were made. In a letter from Oscar Payne to Auto-Ordnance he states that, “&#8230;if a drum failed to pass final inspection we did not produce a new C drum with the same number as the drum that was rejected. We simply threw it away and made another.”</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="292" src="https://smallarmsreview.com/wp-content/uploads/2020/08/011-10.jpg" alt="" class="wp-image-8937" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/011-10.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/011-10-300x125.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption><em>Serial number 101 Type C drum magazine. This drum shows the final markings on the hundred round drums. The front face plate now has the winding instructions stamped in with the serial number of the drum. The back face plate now has the Auto-Ordnance address and patent information, along with the serial number stamped into the back face plate.</em></figcaption></figure></div>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="345" src="https://smallarmsreview.com/wp-content/uploads/2020/08/012-11.jpg" alt="" class="wp-image-8938" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/012-11.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/012-11-300x148.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption><em>This is a second generation “Type L” drum, serial number 23, with a bright blued surface finish, vibra etched winding instructions on the front face and a stamped serial number.</em></figcaption></figure></div>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="429" src="https://smallarmsreview.com/wp-content/uploads/2020/08/013-9.jpg" alt="" class="wp-image-8939" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/013-9.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/013-9-300x184.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption><em>This is a second generation John’s Type L drum, which originally had vibra etched information, but no serial numbering of any type. Unfortunately, this drum was reblued and most of the vibra etched information has been lost.</em></figcaption></figure></div>



<p>The real question should be how many still exist? It is not known for sure but keep in mind that 535 C drums were shipped in the first ten weeks of production shipments (ending 6/11/21). Most of these went to the IRA. Thus, assuming 5,000 were made, this means that 11 percent are already outside the US.</p>



<div class="wp-block-image"><figure class="aligncenter size-large"><img loading="lazy" decoding="async" width="700" height="219" src="https://smallarmsreview.com/wp-content/uploads/2020/08/014-9.jpg" alt="" class="wp-image-8941" srcset="https://smallarmsreview.com/wp-content/uploads/2020/08/014-9.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/08/014-9-300x94.jpg 300w" sizes="(max-width: 700px) 100vw, 700px" /></figure></div>



<figure class="wp-block-table aligncenter is-style-stripes"><table><tbody><tr><td class="has-text-align-center" data-align="center"><em>This article first appeared in Small Arms Review V9N2 (November 2005)</em></td></tr></tbody></table></figure>
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		<title>Disassembly of the Russian RPK 75 Round Drum Magazine</title>
		<link>https://smallarmsreview.com/disassembly-of-the-russian-rpk-75-round-drum-magazine/</link>
		
		<dc:creator><![CDATA[SAR Staff]]></dc:creator>
		<pubDate>Wed, 01 Nov 2000 20:35:50 +0000</pubDate>
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		<category><![CDATA[Mikhail Kalashnikov]]></category>
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					<description><![CDATA[By Norman Potts When Mikhail Kalashnikov first designed his famous AK-47, I doubt he had any idea as to the status his invention would attain. The Avtomat Kalashnikova is now found throughout the world in every major conflict, and has grown into several models manufactured by no less than seventeen countries. There are even derivative [&#8230;]]]></description>
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<p>By <strong>Norman Potts</strong><br><br>When Mikhail Kalashnikov first designed his famous AK-47, I doubt he had any idea as to the status his invention would attain. The Avtomat Kalashnikova is now found throughout the world in every major conflict, and has grown into several models manufactured by no less than seventeen countries. There are even derivative models, such as the Saiga rifles and shotguns, and a plethora of accessories available for this weapon that, after more than fifty years, is still very viable on today’s battlefield.<br><br>Sometime in the early 60’s, the Soviets adopted the Ruchnoi Pulemet Kalashnikova, or RPK . It is the squad automatic version of the AKM, with a heavier receiver and 23.2 inch heavy barrel. The RPK usually uses an extended 40-round version of the standard 30-round magazine, but the excess length often interferes with a good prone position, and 10 extra rounds do not really last that much longer at 600 RPM. The Soviets thus developed the 75-round drum magazine, which proved to be both more compact and extend firing time significantly.<br><br>The 75-round drum is a desirable accessory for almost any AK owner, and often has been quite expensive, especially in light of today’s political climate. The Soviet drum is often more expensive than the similar Chinese 75 and 100-round drums, and at one time was almost impossible to obtain. Both the Soviet and Chinese drums hang below the weapon and are somewhat heavy when fully loaded, but the Soviet drum has a bit more of a forward cant, which allows greater compactness when one goes prone. The major difference, however, is how they load and disassemble.<br><br>The Chinese drums are quite simple, in that one merely pops the retaining clips located at ten o’clock and two o’clock at the back of the drum, lifts off the hinged cover, ensures that the follower is at its innermost position, and places the rounds nose-first in the empty slots of the feed mechanism’s arms. The cover is then closed and secured, the key on the back cover wound about fifteen clicks (three if it will not be immediately used), and you are ready to rock and roll. To unload, one merely opens the back cover as before, pushes the button at the top of the spindle to release the spring tension, and dumps the rounds. The drum may also be cleaned at this point, as I know of no way to easily disassemble one for field cleaning.<br><br>There has been much misconception regarding the Soviet drum with respect to disassembly. I have been told by more than one person, and have even seen twice in this very publication, that the Soviet 75-round drum cannot be disassembled. This is incorrect.<br><br>Actually, the back cover can be removed, although it is difficult to do with a loaded drum, allowing the drum to be fully disassembled into its major components. A loaded drum may be emptied in this fashion, but one must hold the feed mechanism, which is under pressure from the spring, as the cartridges are dumped out. When all cartridges, including those in the neck of the magazine, are out, the mechanism can be allowed to unwind by maintaining control of the mechanism arms and main body of the magazine. This procedure is not recommended unless a stoppage necessitates it.<br><br>The Soviet drum is disassembled by taking a pointed object, such as a cartridge or a punch, and pushing in the detent at the center of the knurled knob on the back cover of the drum. (Fig 1) The knob is turned 90 degrees left or right, and the knob can be lifted off, followed by the back cover. Pressing again on the detent with the pointed object, one can lift up the small lever near the “T” and lift off the feed mechanism.</p>



<figure class="wp-block-gallery aligncenter columns-1 is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex"><ul class="blocks-gallery-grid"><li class="blocks-gallery-item"><figure><img loading="lazy" decoding="async" width="700" height="457" src="https://smallarmsreview.com/wp-content/uploads/2020/09/002-62.jpg" alt="" data-id="10628" class="wp-image-10628" srcset="https://smallarmsreview.com/wp-content/uploads/2020/09/002-62.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/09/002-62-300x196.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2020/09/002-62-600x392.jpg 600w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption class="blocks-gallery-item__caption"><em>Fig. 1</em></figcaption></figure></li></ul></figure>



<p>(Figs 2 &amp; 3) You will notice that the head of the spindle is T-shaped where the knob mates to it. This completes the disassembly for cleaning the drum. There are five major components of the Soviet drum, making it very simple to clean and reassemble (Fig 4).</p>



<figure class="wp-block-gallery columns-1 is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex"><ul class="blocks-gallery-grid"><li class="blocks-gallery-item"><figure><img loading="lazy" decoding="async" width="700" height="457" src="https://smallarmsreview.com/wp-content/uploads/2020/09/003-59.jpg" alt="" data-id="10629" data-full-url="https://smallarmsreview.com/wp-content/uploads/2020/09/003-59.jpg" data-link="https://smallarmsreview.com/index.php/2000/11/01/disassembly-of-the-russian-rpk-75-round-drum-magazine/003-59-4/#main" class="wp-image-10629" srcset="https://smallarmsreview.com/wp-content/uploads/2020/09/003-59.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/09/003-59-300x196.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2020/09/003-59-600x392.jpg 600w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption class="blocks-gallery-item__caption"><em>Fig. 2</em></figcaption></figure></li><li class="blocks-gallery-item"><figure><img loading="lazy" decoding="async" width="700" height="457" src="https://smallarmsreview.com/wp-content/uploads/2020/09/004-53.jpg" alt="" data-id="10630" data-full-url="https://smallarmsreview.com/wp-content/uploads/2020/09/004-53.jpg" data-link="https://smallarmsreview.com/index.php/2000/11/01/disassembly-of-the-russian-rpk-75-round-drum-magazine/004-53-3/#main" class="wp-image-10630" srcset="https://smallarmsreview.com/wp-content/uploads/2020/09/004-53.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/09/004-53-300x196.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2020/09/004-53-600x392.jpg 600w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption class="blocks-gallery-item__caption"><em>Fig. 3</em></figcaption></figure></li><li class="blocks-gallery-item"><figure><img loading="lazy" decoding="async" width="700" height="497" src="https://smallarmsreview.com/wp-content/uploads/2020/09/005-47.jpg" alt="" data-id="10631" data-full-url="https://smallarmsreview.com/wp-content/uploads/2020/09/005-47.jpg" data-link="https://smallarmsreview.com/index.php/2000/11/01/disassembly-of-the-russian-rpk-75-round-drum-magazine/005-47-3/#main" class="wp-image-10631" srcset="https://smallarmsreview.com/wp-content/uploads/2020/09/005-47.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/09/005-47-300x213.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2020/09/005-47-600x426.jpg 600w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption class="blocks-gallery-item__caption"><em>Fig. 4</em></figcaption></figure></li></ul></figure>



<p>The drum is assembled in reverse order. The feed mechanism must be rotated clockwise in order to tighten the wound leaf-spring, which keeps tension on the rounds and ensures reliable feeding. All of the feed mechanisms I have seen in the Soviet drums have an arrow stamped into one of the arms, which indicates the direction in which the mechanism is rotated to create spring tension. I index the feed mechanism by positioning the arm with the arrow just ahead of the magazine neck. I then rotate the mechanism in the direction of the arrow until two more of the arms pass the same point. The three-round “feeder tab”, which acts as a follower, is placed into the neck and is pushed upwards by the mechanism. (Fig 5) The rear cover is then set in place and installing the knob completes re-assembly.</p>



<figure class="wp-block-gallery columns-1 is-cropped wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex"><ul class="blocks-gallery-grid"><li class="blocks-gallery-item"><figure><img loading="lazy" decoding="async" width="700" height="457" src="https://smallarmsreview.com/wp-content/uploads/2020/09/006-32.jpg" alt="" data-id="10632" data-full-url="https://smallarmsreview.com/wp-content/uploads/2020/09/006-32.jpg" data-link="https://smallarmsreview.com/index.php/2000/11/01/disassembly-of-the-russian-rpk-75-round-drum-magazine/006-32-3/#main" class="wp-image-10632" srcset="https://smallarmsreview.com/wp-content/uploads/2020/09/006-32.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/09/006-32-300x196.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2020/09/006-32-600x392.jpg 600w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption class="blocks-gallery-item__caption"><em>Fig. 5</em></figcaption></figure></li></ul></figure>



<p>To load the Soviet drum, it is held by placing the right thumb on the side of the neck and the index finger is hooked on the lip of the loading lever.(Fig 6) The loading lever has a ratchet that rotates the feed mechanism inside the drum and allows the rounds to move into place between the arms of the mechanism. The left hand is used to insert cartridges into the neck of the drum. The method I use is a “two and three” pattern, in which I pull the lever up for each of two rounds and then push in three more without pulling the lever. This method has worked for me to prevent the rounds from jamming up as they move into place inside the drum, which is a possible problem with external-loading drums of this type. As always, it is best for each individual to use the method that suits himself.</p>



<figure class="wp-block-gallery columns-1 is-cropped wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex"><ul class="blocks-gallery-grid"><li class="blocks-gallery-item"><figure><img loading="lazy" decoding="async" width="700" height="457" src="https://smallarmsreview.com/wp-content/uploads/2020/09/007-29.jpg" alt="" data-id="10633" data-full-url="https://smallarmsreview.com/wp-content/uploads/2020/09/007-29.jpg" data-link="https://smallarmsreview.com/index.php/2000/11/01/disassembly-of-the-russian-rpk-75-round-drum-magazine/007-29-3/#main" class="wp-image-10633" srcset="https://smallarmsreview.com/wp-content/uploads/2020/09/007-29.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/09/007-29-300x196.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2020/09/007-29-600x392.jpg 600w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption class="blocks-gallery-item__caption"><em>Fig. 6</em></figcaption></figure></li></ul></figure>



<p>Which of the two drums do I prefer? Like most similar things in life, they each have strengths and weaknesses. The Chinese drum can be loaded and unloaded with ease, but the Soviet drum cannot be accidentally opened and seems to be more robust and solid, as it is made of thicker metal. Although cartridges in the two drums appear to be organized in the same manner, the Chinese drum may actually feed a little more smoothly than the Soviet drum, due to the cartridges being more compartmentalized in the drum. The Soviet drum relies more on spirals in the front and rear interior of the drum to guide the cartridges up into the neck as the feed mechanism rotates. (As you can see in the lead photo) The Chinese drum can be stored fully loaded and the spring wound when ready, but I have found that, sometimes during firing, the spring might not be wound enough and one has to wind it up a few more clicks to feed the last few rounds. This does not happen with the Soviet drum. I have also kept my Soviet drum loaded for months and it functions just fine.<br><br>The Soviet drum has a carrier that is made of green rubberized fabric, with straps that are secured by aluminum studs which protrude through holes in them. The straps can be released by pulling upwards on the ends. The carrier I have is actually East German, but the drum is Soviet, as evidenced by the “star in shield” marking stamped near the neck of the drum. The drum can be used with the carrier in place by releasing the carrier from the belt and pulling off the cover on the neck.<br><br>The Chinese drum comes with a cotton olive-drab carrier that has a cloth shoulder strap, a side pouch for a cleaning kit or oiler, and is secured with those goofy loop-and-wood button closures that the Chinese seem to be so fond of. It appears to me that the drum must be removed from its carrier to be used, because, if nothing else, the shoulder strap hangs down when the drum is inserted into the weapon and the gunner’s enemy would probably die of laughter as he trips and falls with the strap tangled about his legs! Perhaps that’s what that side pouch is for.</p>



<figure class="wp-block-gallery columns-1 is-cropped wp-block-gallery-6 is-layout-flex wp-block-gallery-is-layout-flex"><ul class="blocks-gallery-grid"><li class="blocks-gallery-item"><figure><img loading="lazy" decoding="async" width="700" height="481" src="https://smallarmsreview.com/wp-content/uploads/2020/09/001-50.jpg" alt="" data-id="10635" data-full-url="https://smallarmsreview.com/wp-content/uploads/2020/09/001-50.jpg" data-link="https://smallarmsreview.com/index.php/2000/11/01/disassembly-of-the-russian-rpk-75-round-drum-magazine/001-50-4/#main" class="wp-image-10635" srcset="https://smallarmsreview.com/wp-content/uploads/2020/09/001-50.jpg 700w, https://smallarmsreview.com/wp-content/uploads/2020/09/001-50-300x206.jpg 300w, https://smallarmsreview.com/wp-content/uploads/2020/09/001-50-600x412.jpg 600w" sizes="(max-width: 700px) 100vw, 700px" /><figcaption class="blocks-gallery-item__caption"><em>Soviet drum on left and Chinese on right.</em></figcaption></figure></li></ul></figure>



<p>I prefer the Soviet drum for its stronger construction, reliable function, ease of disassembly, and functional carrier, which also is not as likely to rot in more hostile climates. As stated before, it is also more prone-friendly due to its forward cant, whereas the Chicom drum hangs relatively straight down under the weapon. Both drums are heavy when fully loaded, and may not be practical for routine patrol with a standard AKM. For ambush situations or regular blasting, however, this is quickly remedied by proper application of the trigger finger. In either case, I highly recommend this desirable accessory for one of the world’s best combat weapons.</p>



<figure class="wp-block-table aligncenter is-style-stripes"><table><tbody><tr><td class="has-text-align-center" data-align="center"><em>This article first appeared in Small Arms Review V4N2 (November 2000)</em></td></tr></tbody></table></figure>



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