Our .223 / 5.56 NATO Linear Compensator Flash Can 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 solid 1pc Flash Can precision machined from carbon steel and finished off with a spiral fluting and a black oxide finish. These are great for blowing all concussion blast downrange away from the shooter’s ears and your neighbor at the range. Makes for a more pleasant shooting experience. 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.