BCM Low-Profile gas blocks are made from phosphate finished machined steel and are designed to fit AR-15 and M16 barrels. Includes set screws for mounting.
SPECS: Material : Phosephate finished Steel, Inside Diameter: .625, .750
Mfr Part: BCMLGB750
Inside Diameter: .750
Mfr Part: BCMLGB625
Inside Diameter: .625
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