Guns Walker Defense ARMA: Muzzle Brake Reimagined? David Reeder May 4, 2016 0 COMMENT This is the Walker Defense ARMA, which is short for Adaptive Role Muzzle Apparatus. It’s designed to “…overcome major deficits in existing muzzle brakes and compensators, by reducing rearward and lateral concussion while minimizing recoil and muzzle rise.” According to the manufacturer, many of its design features are specifically intended to optimize the use of the ARMA with NVGs or during periods of low illumination. They advise it also provides greater than 50% recoil reduction on both AR-15s and AK-47s while significantly reducing the rearward pressure wave and keeping muzzle flash to a minimum. They provide all sorts of information and video to support their claims. But does it? We don’t know. We haven’t used one yet. Speaking strictly for myself, I’d rather wear one of those face masks with a dick sticking out its forehead than put one of these things on my rifle…but I guess that’s pretty close minded. Form should be far less important than function, right? Check out these videos. Hard to tell much from just that little bit, but it is intriguing — particularly that last bit where they show it kicking up dust. The only way to know if it actually works is to put on on a gun and try it. Guess I”ll be wearing that dick mask. Here’s what the manufacturer says about the ARMA: Walker Defense ARMA Our ARMA muzzle brake aims to redefine expectations for muzzle devices at large. Using our proprietary, IP-protected Neutralizing Energy, Remain at Origin (NERO) technology, we have developed a muzzle brake we believe is finally worthy of being called “combat-compatible.” Leveraging a firm understanding of fluid dynamics and supersonic flow, we created the ARMA disperse underoxidized gases exiting the device in such a way to minimize muzzle flash. Couple the specifically-designed porting that minimized flash with the fact that no ports face upward, and you have a very low-light compatible muzzle device, even during fully-automatic fire. The ARMA’s technology can readily be scaled up (or down) to just about any caliber from 5.56mm NATO to .50 BMG (and above), allowing it to feasibly be made for virtually any firearm. The possibilities are limitless. The ARMA technology includes consideration of and interaction with quick-detach (QD) suppressor mounts.