BCM Low Profile Gas Block for AR15, M16, M4, M4A1 for .625 barrels. Bravo Company, Gas Block, Low Profile, .625 Barrel, Black Finish For use on AR-15, M16, M4 and M4A1 Phosphate finished machine steel Barrel ID honed after finish per USGI TDP Set screw mounting
BCM GAS BLOCK(.625)
$44.99Price