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The design of this gas block allows the user to mount forearms that extend beyond the standard gas return system. Providing the inside diameter of the forearm is 1-5/8 or greater. It allows the mounting of our forearms without the removal of your pinned or welded muzzle accessory. This gas block consists of a simple, durable, two-piece design that is mounted by the use of four socket head cap screws. Made from high quality steel and finished with a Mil. Spec. phosphate coating. The YHM-9378 is for .750 Standard Barrels. The YHM-9377 (aka 9377A) is for .625 Standard Barrels. |
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| This product was added to our catalog on . |
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