The GB-130 low profile clamp on gas block by Sadlak Industries is designed to fit inside most multi-rail forearms and over barrels with a .750" diameter. The clamp on design assures maximum surface contact to prevent gas blow-by and also prevents loosening due to barrel expansion and contraction. This carbon steel alloy gas block weighs 1.8 ounces and features a manganese phosphate finish. Includes two USA holo-krome #8 x 3/8" Allen head screws.
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