ERGO GRIP GAS BLOCK .750 4821

LOW PROFILE FOR AR-15 FEATURES-CNC machined 4140 chromoly steel-Nitride/Melonite QPQ finish-Chamfered edge, slip-on fit-Fits under most free float handguards-Internal diameter 0.750-Includes (2) set screws for a secure attachment-Accepts standard gas tube roll-pins (roll-pin NOT included)-USA made steel & machined in the USA-Weighs 2 oz.