General Dynamics-OTS is competing with Textron Systems SIG SAUER in the US Army’s Next Generation Squad Weapons (NGSW) program which seeks to replace the current M4A1 Carbine and M249 Light Machine Gun in the close combat squads with a Rifle and Automatic Rifle designed to fire 6.8mm ammunition. The intent is to provide similar characteristics to 270 Win Short Mag. It’s important to note that the 6.8mm settled on by the Army is the equivalent of .277 in Imperial measurement.

General Dynamics-OTS is partnered with Beretta Defense Systems and True Velocity to offer their NGSW candidate system. The .277 ammunition size has influenced the naming of their rifle and ammunition, the RM277, which also makes it handy to begin marketing to other customers.

General Dynamics-OTS designed the bullpup RM277 and Beretta provides Research and Development support and future high-volume manufacturing capabilities at its new Gallatin, TN, facility.

When the Army decided on a 6.8 cartridge, they left it up to industry to develop the actual ammunition. True Velocity has named their composite cased cartridge the 277 TVCM.

The composite construction makes it 30-40% lighter than current, conventional ammunition. Additional benefits are reduced heat transfer as the composite insulates the chamber and bolt face, the production of extremely concentric and consistent case and precise powder drop which results in consistent pressure and muzzle velocities for improved accuracy, and elimination of heavy metals that produce adverse health effects on Soldiers.

TV also boasts magnetic retrieval of spent cases during training and a case which is 100% recyclable.

Unlike the weapon candidates from their competitors, GD-OTS’ M277-R and RM277-AR are extremely similar. The AR is naturally longer and heavier for sustained fire.

Rather than introducing a box-fed rifle and belt-fed automatic rifle like the others, the bullpup design called for both weapons to be box-fed. The bullpup also allows for longer barrels for both increased velocity and accuracy.

They are gas and recoil operated and impulse averaged with short recoil to offer controllable, accurate automatic fire. They also incorporate dual firing modes, closed bolt in semi-automatic mode and open bolt in automatic mode. Naturally, the weapons feature ambidextrous controls. The suppressor is 3D printed and provided by Delta-P.

Having participated in Soldier Touch Points and reliability and performance testing at Aberdeen Proving Ground, next up for General Dynamics-OTS is to incorporate feedback from Prototype Testing #1 into their design and produce the Prototype Testing #2 samples of weapons and ammunition.

Images supplied Beretta.

For some more background on how the Army ended up with NGSW, read this. Admittedly, I was quite skeptical at first, particularly after the Army had just a failed to select a replacement for the M4 just a few years before with the Individual Carbine program and then the start-stop fiasco of the 7.62mm Carbine effort. But, after watching industry rise to the challenge, I quickly went through the stages of grief to acceptance and am now quite optimistic that the Army will field a new capability.

Yesterday, Wayne Prender, Textron Systems’ Senior Vice President of Applied Technology and Advanced Programs gave us an update on their Next Generation Squad Weapon candidate system which is currently vying against General Dynamics-OTS and SIG SAUER to outfit the US Army’s close combat forces (and possible the Marines as well) with a new family of weapons in an entirely new caliber, 6.8mm. But Textron isn’t going it alone. They’ve teamed with Heckler & Koch and Winchester, two other small arms powerhouses.

NGSW is an ambitious program in both scope and schedule which will replace the M4 Carbine and M249 Squad Automatic Weapon, both in 5.56mm. The issue with these two weapons is that the US Infantrymen remains overmatched by enemies who employ longer range small arms.

The new 6.8mm cartridge was developed specifically to increase not only range, but also the amount of energy delivered on target. It performs in a similar fashion to the commercial 270 Win Short Mag round and will provide our troops with overmatch of threat small arms. Additionally, the goal is to lighten the whole package, weapons and ammo, at 20% lower than current.

The secret sauce in Textron’s submission is their novel Case Telescoped ammunition. This construction, with the projectile encased within the cartridge and surrounded by propellant, allows it to be shorter than conception SL ammunition.

This ammunition is not only lightweight but also allows for an entirely new operating system with the rimless cartridge being pushed forward throughout the firing cycle.

This operating system is also designed so that the weapon carries the ballistic load of the ammunition during firing rather than the cartridge case. The polymer case also expands slightly during firing.

This is Textron System’s NSGW-Rifle. The program initially called it a Carbine but the performance parameters the Army is seeking really needs a more full-sized weapon. Hence, Rifle.

The belt-fed Automatic Rifle is designed to replace the current Squad Automatic Weapon. The CT ammunition is held together with polymer circumferential links.

Development of the technology for Textron Systems began about 15 years ago, with subsidiary AAI working on the Lightweight Small Arms Technology. With a goal of lowering the weight of both weapon and ammunition, like the current NGSW effort, they initially created a 5.56mm version, then moved on to 7.62mm and finally a 6.5mm variant once research began to indicate that an intermediate cartridge was required.

When the Army decided to field replacements for the M249 and M4, LSAT seemed like a natural starting point. Initial development was referred to as NGSW-T (we’ve shared video of that effort in the past).

This led to the Next Generation Squad Automatic Rifle Production Opportunity Notice with six companies participating. Naturally, Textron was fully engaged and remains so in the current effort.

So far, they’ve concentrated on milestone 1 which is a prototype test, delivering 30 weapons (15 of each type) and 185,000 rounds of ammunition to support testing.

The program office continues to forge ahead on this priority effort, despite the COVID-19 pandemic, with ongoing technical testing at Aberdeen Proving Ground and Soldier Touch Points. Textron’s Prender assures us they are ready to deliver on the current time line and are even poised to scale to the Army’s demands for initial fielding. In fact, they are so confident, they are already working on both blank CT rounds as well as blank firing adapters.

They’ve also embraced the Soldier Touch Points, taking feedback directly from the troops on ergonomics and the manual of arms for this weapon system. They’re integrating this feedback along with data from Aberdeen on their initial reliability and performance testing into their PT 2 build. PT 2 will require the delivery of 30 Rifles, 28 Automatic Rifles and 680,000 rounds of ammunition.

Interestingly, Prender related that Winchester manufactured the CT ammunition in house, using standard ammunition manufacturing machinery. This means that although their program partner Winchester is now operating the Lake City Army Ammunition Plant, it won’t require a huge investment in new technology should they win.

I’m sure Textron Systems has even more in store and can’t wait to see what they show us next time.

To learn more, download Textron’s brochure on their NGSW system, click here.

For some more background on how the Army ended up with NGSW, read this. Admittedly, I was quite skeptical at first, particularly after the Army had just a failed to select a replacement for the M4 just a few years before with the Individual Carbine program and then the start-stop fiasco of the 7.62mm Carbine effort. But, after watching industry rise to the challenge, I quickly went through the stages of grief to acceptance and am now quite optimistic that the Army will field a new capability.