Ergo Grip Low Profile Adjustable Gas Block | .750 Barrel | BlackErgo Grip
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The Ergo 4821 .750 Low Profile Gas Block is designed to fit under the Ergo Modular and Superlite Rail System, as well as most other manufacturer's free float handguards. Adjustments are made via a 5/64? set-screw and a 5/64? retaining screw ensures the system remains locked, no need for Locktite.