Manufacturers Show Off Their Latest & Greatest in Las Vegas

FOREWARD

A good number of manufacturers offered a brace-equipped pistol version of their rifles at this year’s SHOT Show held January 23–26 in Las Vegas. Having the Hearing Protection Act waiting in the wings, there were a number of suppressors and related products, with the LMT suppressor being an interesting new design. Also prominent were the number of 1-x variable magnification scopes from various manufacturers.

NIGHTFORCE

Nightforce introduced two 1-8x scopes with daylight-bright illumination and true 1x: ATACR and NX8 1-8 x 24 F1. The NX8 has a wider field of view (FOV) than ATACR (35.3m vs. 32.0m) at 100m, while both have the same 4.4m FOV at 8x. In reciprocal, the ATACR has a larger 11.3mm exit pupil at 1x in contrast to the 7.9mm of the NX8. Indeed, the author found the ATACR easier to mount during brief handling at the show.

The ATACR has a 34mm tube and weighs more at 21 ounces in comparison to the NX8 with 30mm tube and 17 ounces. ATACR features capped turrets while the NX8 utilizes exposed turrets. Optically, the ATACR utilizes ED glass while the NX8 shares the same elements as the NXS line. The illumination utilizes diffractive grid technology and is powered by a CR2032 battery that lasts about 130 hours. As of writing, the ATACR is on schedule to ship early spring.

DOUBLESTAR

In addition to their staple line-up of AR-15 parts, upper receivers and complete firearms, DoubleStar introduced the Strongarm pistol brace that fits an AR-15 buffer tube and retails under $100. The arm loop is ambidextrous, and the provided sling stud can be mounted on either side.

LEWIS MACHINE & TOOL

LMT is releasing a short, 7-inch barrel, 40mm grenade launcher with an option for a pistol-grip-only for breeching. This allows users to keep their rifles as light as possible. Its breech is long enough to accommodate the largest of 40mm ammunition.

In addition, the partnership with Laurence Livermore Laboratory bore fruit in the form of an innovative flow-through suppressor. Screwed into standard threads, the muzzle design compresses gases exiting the bore to form a “virtual baffle.” This redirects most of the gases around a longer alternate path to prevent them from “chasing” the projectile. This continuous flow of gases reduces back pressure so that cyclic rate remains constant. Company representatives quoted that this design rapidly vents back to ambient pressure, greatly reducing heat transfer from gas to suppressor body. As such, this design is machine-gun rated and is expected to last the lifetime of a barrel. As part of the testing, LMT subjected the suppressor to a continuous 1,000-round belt from a MK48 with no problems. Lastly, LMT representatives indicated the large exit diameter is designed to mitigate muzzle flash. LMT’s suppressors range from a mere 8 ounces (titanium Confined Space Weapon integral suppressor) to 34 ounces (for 7.62 belt-fed machine guns). Dimensions range from 1.5 to 2.1 inches in diameter and 6.5 to 8.6 inches in length. Most of the suppressors are an over-the-barrel design which minimizes the added length when mounted.

SAMSON

Samson is bringing pistol products to market for the first time in 2018, offering the Pocket Comp, Compact Magwell and Carry Contour +1 Magazine Extension for the Smith & Wesson M&P9 Shield. Pocket Comp, machined from 7075 aluminium, blends with the slide profile to reduce felt recoil. It threads onto a ½ x 28-inch threaded barrel, and the set screws are tightened against a muzzle adaptor to prevent damaging the threads. It functions with the factory recoil spring. While 124gr or heavier projectiles are recommended, 115gr ammunition may work depending on environmental condition and load specification. The patent-pending Compact Magwell requires no gunsmith to install and allows a full firing grip on the M&P9 Shield. It also allows the expended magazine to drop free without shifting one’s grip. Lastly, the Carry Contour Magazine Extension adds one more round to the factory 7- and 8-round magazines while utilizing factory magazine springs. The leading edge forms a finger grove to give additional purchase during one-handed reloads or malfunction clearance.

GEMTECH

Gemtech is bringing back the wipe-based pistol caliber Aurora with a new design. Measuring only 3.4 inches long, 1.125 inches wide and weighing 3.5 ounces, the suppressor features 13.5mm x 1 left-hand threads on one end, with ½ x 28 inch threads on the other end to accommodate many different pistols. The light weight obviates the need for a Nielson device. The polyurethane wipes are optimized for a service life of 30 to 40 rounds of FMJ only, after which the package must be sent back to the manufacturer to “repack” the wipes. The small, light-weight and cost-effective suppressor allows one to protect hearing on a nightstand or duty firearm.

The company is also releasing a rifle caliber Trek II with the same baffles designed to reduce backpressure. This suppressor features an improved mounting surface to reduce weight by roughly 1 ounce while including a pre-drilled hole for permanent attachment to barrel. This relieves the need for an SBR tax stamp if the combination measures over 16 inches long. The Trek II also utilizes a new weldless design that is serviceable at the factory while retaining the iconic Gemtech front cap with 3/8-inch drive socket.

HECKLER & KOCH

In addition to offering new colors for VP9 frames and Crimson Trace modules for both VP9 and VP9SK, HK continues to expand their US manufacturing spaces and staff in Georgia. The company is expected to begin US manufacture of MR556 rifles and HK45 pistols. Continuing the long-standing relationship between HK and B&T, the two companies partnered to launch an HK line of suppressors for the American market. Lastly, HK joined Hogue in releasing a family of knives: 3.25-inch partially serrated Exemplar Folder, 3.375-inch Hadron Automatic and 3.75-inch Karma Response Tool with glass breaker and strap cutter in addition to the partially serrated edge.

FIGHTLITE

For 2018, FightLite offers compact models of their SCR rifle and MCR belt-fed machine gun in both 5.56 NATO and 300 Blackout. The new Raider pistol is a compact pistol version of the SCR, while the MCR Micro has a shortened barrel. Aside from the shortened gas system and handguard, the Micro shares parts with the full-sized MCR. The company has also indicated that an MCR belt hold pawl is in prototype stages.

SCHMIDT & BENDER

Following up on the 1-8 x 24 CC scope, the 1-8 x 24 CC Dual model features an illuminated first focal plane reticle and a daylight-bright dot in the second focal plane. The version for use with Bundeswehr G28 Patrol rifles has a BDC elevation turret and extra 0.2 mil adjustments at either ends of the travel for CQB use. Customers can also opt for turrets with no over-travel and marked in mils only. The scope also features “more tactile clicks” where the “click” takes more effort every 1 mil and at zero windage for low light use.

The aforementioned diffractive grid technology replaces the split-beam prism for FlashDot illumination. The illumination passes through a grid and forms constructive and destructive interference patterns in order to achieve peak amplitude at the eye. This technology is currently featured in the 1-8 x 24 CC Dual, Polar Second Focal Plane reticles and LR reticles.
In the veins of incremental improvement, S&B now offers a magnification throw lever that is compatible with some current scopes and all new models. Future PM models and current 3-20 x 50 Ultra Short plus 5-25 x 56 High Power scopes feature a locking windage turret with a protruding nub to indicate dialing left. The nub is retracted when dialing right. Also on display is a 3-21 x 50 prototype for hunting and competition use with both First and Second Focal Plane options as well as locking turrets.

AIMPOINT

The recently released CompM5 continues to be in the spotlight. The sight has the same 2MOA dot and overall size of the Micro T-2 but utilizes an AAA battery mounted in the same fashion as the CompM4, as well as changing body material to 7075 aluminium. The original Micro T-1 was made of 6061 Aluminium with a 6-in-lb torque spec; the steel screw could strip the threads if misused. The Micro T-2 incorporated a steel Heli-Coil thread insert in the 6061 body to give roughly three repair attempts if the 12-in-lb torque specification were exceeded. The CompM5 changed materials to 7075 Aluminium to maintain the 12-in-lb specification without the need for a Heli-Coil. In addition to the new product, Aimpoint is releasing a limited-run of Micro T-2 sights in Flat Dark Earth.

VORTEX OPTICS

1-6 x 24 Razor Gen II-E reduced weight by about ¼ pound while maintaining the same durability and optical performance of its successful older brother. Different material and lightening cuts in the turret assembly gave the weight savings. Vortex is adding 4-24 x 50 and 3-18 x 44 variants to the Strike Eagle entry-level scope line-up. The new Crossfire Red Dot sight is very reasonably priced and includes a skeletonized mount with two height options. Lastly, Vortex is expanding their target observation portfolio with the Viper HD spotting scopes and Kaibab HD binoculars.

TRIJICON

Released earlier, company representatives indicated that the RMR Type 2 continues to be a strong seller. Optimizing for pistol use, Trijicon strengthened the electronics and battery contact in the Type 2 to sate the fast-growing demand of optics-equipped pistols. In addition, the new 4-16 x 50mm Accupoint bolstered the portfolio of tube scopes with dual fibre optic / tritium illumination.

SIG SAUER

The trend of releasing rifles in pistol form continues with the SIG MCX Rattler, which has a 16-inch overall length when folded and is available in both 5.56 NATO and 300 Blackout. The low profile design features a shaved shell deflector and the more vertically angled pistol grip. The two-position gas regulator can handle suppressor back pressure while the upper can be installed on a standard AR-15 lower with the assistance of a conversion kit.

SIG also debuted the P365 micro-compact pistol featuring a 10+1 capacity and standard night sights. The pistol ships with one flush and one extended magazine, along with modular grips. In addition, a commercial version of the M17 is anticipated for release in the second quarter of 2018.

PATRIOT ORDNANCE FACTORY

Following up the success of their Revolution rifles, POF is releasing the G series Gentlemen’s Slide for Glock 17, 19 and 34 with cutouts to fit the Trijicon RMR. A Glock 43 slide without RMR cutout is soon to be released. Made of 17-4 billet stainless steel and H900 heat treated, it is finished in nitride for protection and durability.

SPYDERCO

Spyderco debuted several new edged tools for 2018. The Warrior Hawk features a faceted front, a spike and a pry tip. It is made of D2 tool steel with a G10 handle. The US-made Shaman folder utilizes a thick CPM S30V blade with a plain or serrated edge option and secures with Spyderco’s patented Compression Lock. The 2.5-inch blade Lil’ Native, employing either a back or Compression Lock, was developed with urban-friendly carry in mind. Lastly, the Sliverax flipper folder has an S30V blade and a carbon fiber / G10 laminate handle.

COMBINED SYSTEMS

The less-lethal-focused company offers grenade launchers and four munitions: aerosol, chemical, impact and flashbang. While the company is best known for its flashbang, it also has the highest injury potential from overpressure and heat in close proximity. The company takes safety seriously and requires customer agencies to have staffs that were trained within the past four years before selling flashbangs. In 2018, Combined System is looking to expand their breeching portfolio, to potentially include 40mm in addition to current 12ga munitions.

KNS PRECISION

Adapting to the increasingly common use of suppressors and red dot sights on pistols, KNS partnered with Dead Air Armaments to develop the Switch Sight. When flipped down to standard height, it remains compatible with standard holsters while completely clearing red dot sight (e.g., Trijicon RMR) view windows. When rotated 90 degrees to increase height, it clears the top of most suppressors while acting as a backup-sight for red dots. This product is currently in prototype phase.

The adjustable AK piston system on display is already in production. Two versions (one or two vent holes) allow users to fine tune for 5.45 x 39mm or 7.62 x 39mm rifles with a rotating sleeve to control gas venting. It is noteworthy that the KNS piston does not require the difficult process of changing gas block. Company representatives indicated that the adjustable piston slows down the rate of fire to achieve better control and reduces “piston pop” to decrease noise by 5 to 8dB when used in conjunction with a suppressor.

TEAM WENDY

Team Wendy is debuting a lower profile EXFIL Ballistic SL helmet that is rated to NIJ Level IIIA. The helmet is lighter by 15% and sports a new rail mount with 1913 rails forward for light, camera, etc. The new EXFIL Ballistic Visor (featuring lens made by ESS, part of Oakley) and Ear Covers (compatible with in-ear communication and hearing protection) guard against fragments and are ready for sale along with the helmet in March.

OHIO ORDNANCE

New from Ohio Ordnance in 2018 is the M249 drop-in Select-Fire trigger group. It follows the same vane as their patented M240 Select-Fire trigger group while boasting multiple patents itself. Also new is the OOW240 Patrol that reduces weight from 28 pounds to under 21 pounds with lightened parts, dimpled short barrel and M4 collapsible buttstock. The bipod was moved from the gas block to an underside rail that can accommodate a foregrip and other equipment. Lastly, the HCAR is being made available as a pistol as well.

AERO PRECISION

Launched at the show is the new R1 Rail. The company representative also mentioned that a serviceable, 30-caliber suppressor to be fully made of titanium is in the prototype stage. While the direct thread version is anticipated first, the end goal is to develop a QD mount compatible with the VG6 line of muzzle brakes.

DANIEL DEFENSE

Adding upon the previously released MK18 pistol, the 10.3-inch barrelled DDM4V7 is now available in pistol form chambered in either 5.56 NATO or 300 Blackout. Equipped with the SB Tactical SOB brace, users can also choose to add a Law Tactical adaptor for a 20.75-inch folded length.

Building upon its Aimpoint Micro mount, Daniel Defense is introducing a 30mm single-ring mount for the likes of Aimpoint Comp M3 and PRO as well as a cantilever mount made from 6061 Aluminium for 30mm and 1-inch scopes. The bottom half of the ring is integral to the mount with torque specifications engraved to remind users.

LEUPOLD

Two Mark 5 HD scopes are new for 2018: 3.6-18 x 44mm and 5-25 x 56mm using 35mm tubes. The series feature a three-revolution elevation turret with 10 mils per revolution, along with physical indicators to prevent users from “being lost in the dial.” In the first revolution, the zero lock protrudes while the pin is flush. The second revolution retracts the zero lock while the pin is still flush. The third revolution keeps the zero lock retracted while protruding the pin. When running the elevation dial across the zero stop, the lock automatically secures the turret at “0.” An extra 1 mil adjustment is included below the zero stop to accommodate point-of-impact shift from suppressor or clip-on night vision. The throw lever gives quick and smooth zoom adjustments and is placed to avoid blocking the rifle bolt handle at maximum magnification.

The new VX Freedom series provide entry level 1-inch scopes, with the 2-7x and 3-9x models being rimfire-specific. Also of note is the new rubber armoured RX2800. The 2800-yard-capable range finder continuously ranges as long as the button is held down.

KINETICS RESEARCH GROUP

Against the backdrop of $1000USD precision rifle chassis, KRG is offering the $350, 2.9-pound Bravo Chassis for short- and long-action Remington 700 as well as Tikka T3. Although the price and specifications differ slightly amongst versions, all feature tool-less adjustable check piece and ship with three spacers for length of pull fitment. The bottom of the stock can be smooth or hooked (for rear bag) by undoing a screw to remove a cover. For bedding, the chassis utilizes an aluminium backbone that runs to the tip of the forend. For feeding, it utilizes the ubiquitous Accuracy International magazines. For now, the chassis is only available for right-handed rifles.

FN AMERICA

Newly available to US law enforcement and military, the SCAR SC is a select-fire 5.56 x 45mm subcompact carbine with non-reciprocating charging handle and telescoping buttstock. Sporting a 7.5-inch barrel, the overall length can be collapsed to 21.1 inches. In addition to the PDW type stock, other options available through FN Herstal for international customers include a helmet version meant to accommodate face shields as well as a standard SCAR stock. FN representative indicated there are no current plans for a commercial semi-auto version or additional stock options for the US market at this time.

On the commercial side, FN is offering an AR pistol version of their popular FN15 chambered in 5.56 x 45mm and 300 Blackout, with a brace available as an accessory for a one-stop-shop. The company is also offering California- and Maryland-compliant versions of the FN15. Lastly, there is a limited run of dual tone FDE & Black for pistols, FN15 Tactical II and M249S.

QUANTICO TACTICAL

The newly available Hunter Data Board builds on the Sniper Data Board (already in operational use) with the addition of a bubble level in the mounting arm. Attaching to the top Picatinny rail of a rifle, it reduces rifle cant and folds out to provide quick Data on Previous Engagement (DOPE) reference while maintaining cheek weld. The company representative described this product as “by snipers, for snipers;” inspiration stemmed from a target escaping while the sniper changed body position to reference his sleeve mounted DOPE card. With the Hunter/Sniper Data Board, the card is inserted into a water resistant holder which velcros to a 6061 Aluminium assembly. This US-made product provides a ready reference while increasing awareness. The Sniper Data Board can be retrofitted with the Hunter arm. The Hunter/Sniper Data Board will be available soon through Quantico Tactical’s extensive GSA Schedule.

GORILLA AMMO

The company offers ammunition with a polymer body and metallic case head to achieve 30% weight reduction in 5.56 x 45mm, 7.62 x 51mm and other popular calibers. The company representative related the enhanced accuracy and reduced chamber temperature. As the polymer case does not transfer as much heat to the chamber walls, the heat is expelled with the gases instead.

BERETTA

Beretta acquired Victrix Armaments and is now offering the 50BMG Corvus as a new addition to their precision rifle line. The rifles are made in-house in Italy with barrels sourced from Benchmark in the US and coated with PVD so as to not require oil. Although the rifles are fixed caliber (e.g., no swap kits to go from 7.62 x 51mm to 6.5 Creedmore), the Victrix line-up covers a variety of calibers such as short-action 7.62 x 51mm, long-action 338 Lapua Magnum, 408 Cheytac and the venerable 50BMG.

MEOPTA

The storied Czech optics manufacturer debuted a new line of tactical red dot and magnified sights. MeoRED T Mini has a more square shaped lens while the T2 Mini has a tube body similar to the Aimpoint T2. The T2 offers three reticles: single dot, two dots for hold-over and a circle-dot reticle. Scheduled for release in May, the MeoRED T is a tube type, full-size, red dot sight utilizing a AA battery for a minimum 2000hr run time at medium brightness. All red dot sights can be paired with the new MeoMag 3x Magnifier for versatility.

The MeoACE 3 x 20mm scope features an etched Ballistic Drop Compensating reticle culminating in a AA-illuminated chevron. The right half of the stadia is calibrated for 5.56 x 45mm and 180gr 7.62 x 51mm, while the left half is calibrated for 7.62 x 39mm.

KNIGHT’S ARMAMENT COMPANY

Two new QDC suppressors are offered: CS and PRS with the former designed for carbines and the latter for precision rifles. Both are designed to reduce back pressure and are expected to ship in the second quarter. A company representative remarked upon their effects in reducing group sizes.

Of interest to “clone” builders, KAC will offer “The Vault” line this year where a rotating selection of legacy accessories is reissued. Four free float RAS AR-15 handguards are slated for 2018: Carbine, Too Long, Mid-Length and MRE. One run is scheduled for the end of first quarter with another in the third quarter. Additionally, KAC is also reissuing the XM9 snap-on wipe based suppressor.

Greg Felton of Law Enforcement International (LEI) in the UK, was trying to meet the requirements of a friendly Government to supply a 7.62x51mm “Designated Marksman Rifle.” No product on the market met the client’s particular specifications. Greg brought in Karl Lewis of Lewis Machine & Tool (LMT) from the U.S. After much brainstorming about the needs to be filled by this new rifle, Karl and Greg started in on the project. The client wanted select-fire capability, but the first designs were kept to semiautomatic only, with a 16-inch barrel. By good fortune, as final development and trials on the semiautomatic were completed, the British MOD published an “Urgent Operational Requirement” (UOR) solicitation for such a rifle for immediate deployment in Afghanistan. The rifle was submitted for trials and the design won the competition, was contracted for and designated as the L129A1 rifle, with the vernacular name as the “Sharpshooter Rifle;” comparable to the U.S. DMR (Designated Marksman Rifle). LMT and LEI have now finished development of the select-fire version, as well as some rifles with shorter (13.5-inch) barrels and other options – but that’s another story…

In essence, Lewis Machine & Tool’s semiautomatic rifle, the LM308MWS, has been selected by British MOD as the new Sharpshooter rifle. The version of this rifle was in competition with the FNH SCAR-17 (Mk17 Mod 0), the HK model 417, Sabre Defence’s XR-10 and offerings from Knights and Oberland Arms. When the competition was over, LMT’s rifle was designated as the L129A1. It has been several decades since MOD has changed rifles for the longer range duties, and the new L129A1 is geared towards the 800 meter ranges being encountered in today’s combat environment. The AI .338 bolt action replaced and upgraded the AI L96 7.62mm several years ago. “Sharpshooter” is a completely new role for the British Army. Quick reaction, rapid follow up shots, long range, harder hitting than 5.56mm is the idea for the L129A1, but the sniper rifle is still a bolt action.

Greg Felton from LEI explained the ammunition requirement to SAR:

“The ammunition criteria stated by the MOD was that the rifle was to be able to use both RG 155-grain sniper ammunition, plus M80 ball and tracer, including de-linked machine gun belts. In the end during their trials with the various competitors, they found that the 155-grain fired so much better than the standard ball that it was made the official issue ammunition for the weapon. As to what it is “matched to,” we (Karl & I) designed the rifle to use both standard ball and 168-grain Match. With a 1:11.25 inch twist it works well with these weights, however, the heavier 175-grain projectiles need a faster twist for best results at longer ranges.”

The LMT Monolithic Rail Platform is a one piece milled upper receiver that includes four rails to the front, providing a stable platform for returning devices to zero on installation. It also allows for a free floating barrel that is interchangeable for different lengths, although not in this particular issue.

The initial order of 440 L129A1 Sharpshooter rifles has been added to several times now. The L129A1 has been in combat in Afghanistan since April 2010, and has received excellent field reports from the troops.

Ever since the change over from the 7.62x51mm to the current 5.56x45mm there has been controversy between two fundamental schools of thought on what a military cartridge should be. The United States military can be summed up in one word: tradition. In the 1960s, that tradition clouded the vision that a new dawn of small arms development in both concept, mechanics and ammunition had come. Still entrenched in the “one shot, one kill” mentality, our soldiers were sent into combat in Vietnam with the M14 which many considered to be an inferior weapon to the AK47 assault rifle that the enemy used. The enemy were able to lay controlled large volume of automatic fire on positions which, in a meeting engagement, will win you a fight. Our soldiers were equipped with a heavy recoil rifle that was impossible to control on fully-automatic. The accuracy was of no use because the enemy could not be seen.

With much trepidation, the military adopted the AR-15 rifle destined to become the M16/M16A1. A new age of small caliber high velocity cartridges gave way to providing an individual soldier with firepower he had never had before. The 5.56x45mm cartridge utilizing a .224 diameter 55-grain full metal jacketed bullet proved to be a great asset to the American fighting man with the ability to have a lightweight rifle that was completely controllable on fully-automatic fire and the soldier could carry more than twice the combat load with an M16 than he could with the heavy M14 rifle.

The Third Generation M16A2 and M855 Ball

With the product improvements of the M16A2 the weapon system was enhanced. Due to the heavier 62-grain bullet, 1 turn in 7 inch rifling twist and new fully adjustable rear sight, both penetration and long range accuracy were enhanced. However, the culprit of the future problems with ammunition terminal performance would come from the ammunition, the M855 Ball.

The M855 Ball is a three piece bullet consisting of a copper jacket, lead plug and a steel penetrator core in the tip. This bullet was designed for a machine gun, not a rifle. With the onset of the Global War on Terrorism, terminal deficiencies were found using M855 Ball, particularly in M4 carbines, when striking thin, malnourished, Taliban and Iraqi soldiers. There was a serious inconsistency in at what point the bullet would yaw and splinter. Some lots of ammunition would penetrate only slightly within inches and yaw and splinter. Others would go straight through and never yaw nor splinter. This caused serous knockdown problems particularly with the decreased velocity of 14.5 inch carbine barrel.

A solution put forth by the United States Special Operations Command (SOCOM) was the creation of a new and improved 5.56x45mm cartridge that would increase long range accuracy and terminal performance with consistency. Accuracy is seriously degraded in the M16A2/A4/M4 due to the inherent characteristics of the M855 bullet. The penetrator core degrades accuracy and if not manufactured properly, the center of gravity will be off causing the bullet to become a “flyer.” Additionally, in the area of terminal performance, there was no consistency from lot to lot on what exactly it would do upon hitting a human target.

The answer was the Mk 262 MOD 1 cartridge that SOCOM adopted. This is a Sierra 77-grain open tip match bullet loaded by Black Hills. This is undoubtedly the most effective 5.56x45mm military cartridge in the world manufactured to match grade specifications with combat reliability. The long range accuracy was drastically increased and its terminal performance enhanced. This new projectile works well regardless of the type of target and performs considerably better on human targets in all known distances and conditions. This round is used almost exclusively by SOCOM operators in their M4A1 carbines and Mk12 rifles. This solution satisfied most of the SOCOM operators: except for one.

The 6.8x43mm REM SPC

The 5th Special Forces, particularly MSG Steve Holland, felt that there was still room for improvement. The concept was not original. The U.S. military experimented with the possibility of the 6mm caliber projectile being the ideal compromise of accuracy, range and terminal performance. In the late 1970s the concept was abandoned in favor of the 5.56x45mm battle rifle.

With the assistance of the U.S. Army Marksmanship Unit, Holland came up with a concept for a 6mm cartridge that could be fired in the M4 platform. The starting point was the .30 Remington cartridge which is merely a rimless .30-30 Win. round. It was trimmed and resized to accept a 6.8mm projectile. This concept, along with the hand-loaded experimental ammunition and CAD drawings went to Remington Arms. Remington wanted to aid in the Global War on Terrorism so they took on the task of developing the ammunition.

The 6.8mm REM SPC cartridge has been mostly a myth for the last few years due to the fact it has been developed quietly and kept proprietary. No ammunition has been made as of this writing in large quantities due to the fact the ammunition is being perfected before it will be shipped. Remington has reported three small runs of ammunition including ball and match grade ammunition. Hornady has also produced some loads in this new caliber.

The Firearms

Prototype rifles were manufactured by Precision Reflex, Inc. (PRI). Dave Dunlap assembled upper receivers with free floating handguards or A.R.M.S., Inc. SIR systems and the OPSINC silencer and muzzle break. Dunlap also was charged with designing the magazine which is different from the standard 5.56x45mm magazine. Currently, PRI has been the only producer of 6.8x43mm Rem SPC magazines. PRI also produces complete upper receivers chambered in the 6.8x43mm Rem SPC cartridge.

The Barrett M648

At the 2004 SHOT Show, Ronnie Barrett unveiled a new product line: his M648. This company, dedicated to .50 BMG caliber specialized weapons, introduced the first production 6.8x43mm Rem SPC firearm and has taken the lead on this project. While the cartridge is still technically under development (to be more correct would be to say “tweaked”), Barrett has teamed up with Peter Forras to work with Remington to optimize the weapon and cartridge. Forras has spent much time down at Remington working with them to perfect the 6.8x43mm cartridge.

The rifle has been based on the standard M16-platform. Barrett offers the rifle in both commercial and law enforcement/military configurations. The “bells and whistles” are the same for both versions, the only real difference is the use of selective fire, flash suppressors, bayonet lugs and telescopic stock on the law enforcement/military models.

The weapon as offered uses a mid-length gas system developed by Mark Westrom of ArmaLite, Inc. This mid length gas system changes the location of the gas port by placing it further forward than the carbine and slightly behind the rifle. This gives two major advantages: reliability and durability. By putting more distance between the bolt carrier and gas port, lower port pressures are created resulting in the bolt assembly’s velocity being slower. This increases reliability in extraction as well as extending the life of the bolt and some of the trigger components.

The barrel is manufactured by Fred Fedderson. This 1 turn in 10 inch twist barrel is chrome plated and is currently available in 16 inch length only. Barrett has plans on offering 12 and 20 inch barrels in the near future. The commercial version has a muzzle check similar to the one used by ArmaLite, Inc. The law enforcement/military versions use the standard M16-style muzzle break/compensator

The M648 gas block utilizes a folding front sight assembly. This assembly was designed by Barrett. On the law enforcement/military version, there is a threaded collet on the edge of the gas bock to install the silencer.

The Mid-Length SIR System

The A.R.M.S. Inc. SIR (Selective Integrated Rail) system developed by Richard Swan is the solution for many problems associated with military use of this type of weapon system. The SIR system is a free-floating handguard assembly that attaches to the carrying handle by a sleeve that goes on top of the rail (thus protecting it) as well as directly to the barrel nut. This give an extended top rail that runs the entire length of the upper receiver to the front sight assembly. There are four Mil-Std 1913 rails that enable optics, laser, flashlights and whatever other accessories that may be needed for the rifle with no effect on the barrel and its performance.

Free floating a military weapon has many benefits. First would be accuracy. With nothing impeding on the harmonics of the barrel, better uniform accuracy is achieved. Additionally, the barrel remains cooler as there is significantly better air circulation enabling the weapon to fire longer on full automatic fire. Another benefit, particularly with a hot barrel, pulling down on a vertical fore grip will not cause the barrel to bend or droop. The SIR system may also have a M203 grenade launcher attached to it. All the current models of the M648 feature the A.R.M.S. Inc. SIR system as well as the ARMS #40 L emergency flip-up backup sight.

The Bolt

The bolt carrier is standard M16/AR-15. The difference lies in the bolt itself. The bolt was designed by Chris Barrett and is manufactured by Lewis Machine & Tool (LMT). The bolt uses the trademark dual extractor spring “lobster tail” extractor manufactured by LMT as it is more durable and reliable. The bolt has other similarities to the LMT Enhanced bolt but Barrett made some changes in materials and specifications specifically for the M648. The bolt has a nickel plating on it.

Configurations

The M648 comes as a full weapon with fixed rifle stock as well as selective fire carbine lower receiver with the telescopic buttstock. The system is also sold as an upgrade or a conversion kit which will include the entire upper receiver assembly and magazine. The conversions can be obtained with either selective fire bolt carriers or semiautomatic only. It should be noted that when putting a conversion on a standard selective fire carbine lower receiver, the “H” buffer should be used. This is the buffer with two steel weights and one tungsten. If the standard three steel weight buffer is used the carbine may experience bolt carrier bounce resulting in light strikes on full automatic. This is not an issue with the full length rifle selective fire lower receiver. Semiautomatic guns can use either due to the bolt group will have sufficient time to lock before the next shot is fired. There has been some discussion about Barrett eventually coming out with a piston driven mechanism for this weapon system.

Shooting Impressions

The rifle received for testing was a law enforcement/military upper receiver with a standard semiautomatic only lower receiver. The author’s own Colt M4 full automatic carbine lower was used for full automatic testing. The semi-automatic only lower receiver was equipped with an LMT two-stage match grade trigger. The optics used were the M68 Aim Point Comp II, EOTech holographic sight as well as the standard backup sights. Approximately 700 rounds were fired in total in both semiautomatic for accuracy as well as fully automatic for functionality. The magazine used was a PRI made 28-round steel magazine. The ammunition was manufactured by Remington.

Fully-automatic tests were conducted in close quarter battle conditions. Targets ranged from 5 to 25 meters. The cyclic rate was about the same as the standard M4 carbine and recoil was really not that much more. There was no problem controlling the weapon. The EOTech sight made shooting easier allowing both eyes to remain open increasing speed and accuracy. By adjusting the brightness of the sight, it was useful for both close tactical work as well as short range sniping.

Conclusions

The 6.8mm Rem SPC is without a doubt an improvement over the existing 5.56x45mm for military use. But the question is, how much better? The cartridge unfortunately has a very steep uphill battle ahead of it once the military community gets a hold of it. The weapon itself is not an issue. The M16-based design is well proven. But in order for SOCOM in particular to adopt such a cartridge for use will be a gigantic undertaking. First and foremost it has to be more than better, it will have to be drastically better and offer a large advantage. Second, and perhaps the most critical, will be logistics. The cartridge will be at best used by SOCOM operators and them alone. From a logistical standpoint, adding a new cartridge into inventory, in particular one nobody else in the service uses, can cause serious problems. Once SOCOM operators are deployed they become part of the unit they are assigned and along with that goes their supply. Having non-compatible ammunition can put the operators at risk given they do not have re-supply specific to them.

The Barrett M648 and 6.8x43mm Rem SPC ammunition performed flawlessly and accurately. Barrett has not been too quick to go into production due to the fact they have waited until the development of the rifle and ammunition was completed insuring their customers get a final production weapon and not a semi-prototype. As of this writing, after more than three years of advertising and manufacturing of barrels to fire this new cartridge, the ammunition has yet to be completed and put into full production. This weapon and cartridge will undoubtedly find a following in law enforcement and commercial shooters and competitors. As far as the military use of this weapons system, only time will tell.