Muzzle attachments specifically designed to enhance your CQB effectiveness install on any AR-15 rifle or carbine with ½"-28 tpi muzzle threads. Aggressive, diamond-shaped teeth aid in effective less-lethal muzzle strikes during hand-to-hand combat, while wide strike face lessens danger of a penetrative wound on contact. Also serves as a stand-off device for body contact shots. Precision formed from 8620 steel, heat hardened to resist erosion by combustion gases, with a tough, parkerized finish that matches most black/dark gray rifle finishes. Muzzle Brake helps you stay on target by venting gases upward to counteract muzzle rise for fast follow-up shots; improves control and accuracy during full-auto fire. Accepts most over-the-barrel sound suppressors and actually increases their effectiveness.