Sniper Sound Redirect Muzzle Brake/Recoil Compensator for 4/15 .223/5.56 NATO 1/2x28 Black ASMZ09. 223/5.56 NATO 1/2x28 Black Sound redirect 1/2x28 brake 13/16x16 threaded sleeve. Color: Black Includes crush washer Specifications for Sniper Sound...