BCM® Low Profile Gas Block for AR15, M16, M4, M4A1.
- Machined of steel, phosphate finish, for .625 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.
- Set Screws are Steel 10-32 x 3/16 Knurled Cup Point