Ergo 4822 Adjustable Gas Block .750" Black Nitride 4140 Chromoly Steel
The Ergo 4822 .750 Adjustable Gas Block is designed to fit under the Ergo Modular and SuperLite Rail System, as well as most other manufacturers 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.