The A2 bird cage flash suppressor is the
standard muzzle device of the US Armed Forces and found AR- Platform riflesStandard GI styleCNC
machined from solid 303 stainless steel bar stockThread pitch 1/2x28 For AR15Rust and corrosion resistant Stainless steel
AlloyOverall length1¼Helps control muz..
CNC Machined High Quality SteelHeat Treated.223 / 5.56 Nato Shark Muzzle BrakeSide Ported And Ported On TopSolid Machined ConstructionBlack Oxide FinishReduced Back PressureWraps around your threaded barrel and threads on 1/2"x28 thread pitch..