AR-15 Mini Slip Over Barrel Shroud With Multi Port Muzzle Brake (Anodized Black) - $29.99 US Made T6 Aluminum New Micro Design Total Weight: 2.9 oz Length: 2 3/8″ Covers 1 3/8″ of the Barrel Threads begin approx 1.25″ down the shroud Dual Purpose Unit, Functions As A Barrel Shroud And A Muzzle