Shark style muzzle brake is made of all steel construction with a heat treated, erosion resistant Black oxide finish. It comes with a .308 5/8"x24 thread pitch. Side ported & ported on top to Reduce muzzle flip, recoil & barrel whip. Featuring an aggressive custom design with sharp muzzle end steel prongs. Works well as an improvised breaching and impact device for hand-to-hand situations.