ar-15-5-8x24-micro-slip-over-shroud-with-multi-port-muzzle-brake
ar-15-5-8x24-micro-slip-over-shroud-with-multi-port-muzzle-brake, T6 6061 Aircraft Aluminum5/8x24 TPIFunctions as barrel cover & muzzle brakeDual-purpose, functions as barrel cover & muzzle brake