Our .223 / 5.56 NATO Krinkov Flash Can Flash Hider Linear Muzzle Brake Compensator is perfect for your AR pistol or AR15 or any other SBR short barrel rifle build threaded in 1/2-28 TPI. It is a 2 piece Krinkov design like the original Krinkov Can from the Soviet Union. The removable chamber is threaded into the can and held in place securely with a cotter pin. Precision machined from carbon steel and finished off with a knurled finish on the exterior flash can, and surface finished in a black oxide finish, this Krinkov Flash Can muzzle brake linear compensator will look great on your .223 / 5.56 NATO SBR rifle or even carbine. Please ensure your barrel is threaded 1/2-28 thread pitch. All our muzzle brakes include a free crush washer for timing your muzzle brake to your rifle.