AR-15 Muzzle Brake 5.56 Black 1/2-28 Threads - a precision muzzle brake chambered for 5.56 that redirects propellant gases to counter recoil and muzzle rise, keeping your sights on target for faster, flatter follow-up shots. Features: Reduces felt recoil and muzzle climb 1/2-28 threads Verify thread pitch matches your barrel before installation