Description The Bravo Company Manufacturing Low Profile Gas Block is manufactured within very tight MIL-SPEC tolerances. Machined from steel then phosphate finished, the internal diameter is then honed, ensuring a correct fit to your barrel. Secured using the two provided 10-32 x 3/16 knurled cup point set screws. NOTE: Does not include gas tube roll pin. Additional information Weight 2.08 oz Dimensions 1 × 0.9 × 1.34 in Finish Black Nitride Gas Block Journal 0.75 Adjustable No MPN BCM-LGB-750 UPC 855877004138