Quiet Muzzle Brake 30 Caliber 1/2-28 Steel Matte Blued - a precision muzzle brake chambered for 30 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 Steel construction Verify thread pitch matches your barrel before installation