Yankee Hill AR-15 Specter Gas Block YHM-9378
The design of this gas block allows the user to mount forearms that extend beyond the standard gas return system. Provided 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 using a 7/64" Allen wrench. Made from high quality steel and finished with a Mil. Spec. phosphate coating. .750 Diameter.