BCM Low Profile Gas Block (steel with set screws)
BCM Low Profile Gas Block for AR15, M16, M4, M4A1. Machined of steel, phosphate finish, for .625 and .750 barrels.
Manufactured within very tight Mil-Spec tolerances on all ID's.
Barrel ID honed after finish per USGI TDP.
Made by Bravo Company MFG, Inc. with set screw mounting.
Available Sizes: .625BBL and .750BBL