Tapco Gas Block .750 AR Platform Steel. 750 AR Platform Steel - Upgrade your AR-15's gas block with the TAPCO Gas Block .750. Precision-engineered for reliability and performance this gas block features a sleek black finish that complements any rifle build. Designed to fit barrels with a .750-inch diameter it ensures optimal gas regulation for smooth cycling. With its low-profile design it sits snugly beneath handguards reducing interference and enhancing aesthetics. Plus the convenient two-screw installation makes mounting quick and hassle-free. Specifications for Tapco TAP22070 Gas Block .750 AR Platform Steel: Manufacturer: Tapco Color: Black Fabric/Material: Steel Gun Make: AR Platform Gun Model: AR-15 Tapco TAP22070 Gas Block .750 AR Platform Steel What firearm models does the manufacturer say Tapco TAP22070 Gas Block .750 AR Platform Steel is compatible with? The manufacturer says that Tapco TAP22070 Gas Block .750 AR Platform Steel is compatible with AR-15