Check the listing for details. NEW! Compact Low Concussion 1/2x28 Muzzle Brake Compensator .223 5.56. Condition: New. Listed at 16.99 USD. Overview: Black Oxide Finish, solid precision machined construction. The 223/5.56 muzzle brake will reduce recoil & climb which will improve shooting and control. The competition muzzle brake redirects propellant gasses and reduces recoil and flash dramatically. Wraps around your threaded barrel and threads on 1/2"x28 pitch. Product Description:CNC Machined High Quality SteelHeat Treated, Black oxide finish, solid precision machined construction.Competition Muzzle BrakeSide Ported And Ported On TopSolid Machined ConstructionBlack Oxide FinishReduced Back Pressure1/2"x28 Pitch for .223Compact VersionCrush Washer includedMuzzle end OD : 1 inch , Barrel end OD 0.8" Length of the muzzle brake ( with thread ) : 2 3/8 inch Weight: 4 oz