PRI Armalite .750 Picatinny Railed Gas Block
This .750 diameter barrel mounted gas block has a 2 1/2″ top rail that has the same plane as the Armalite 308 receiver. The gas block is held into place with crossbolts.
The rail is constructed of lightweight T6 6061 hard coat Black anodized aluminum. This gas block weighs 2.5oz. Gas block fits over a .750 diameter barrel. The block locks into place with 2 crossbolts the same as our original gas block front sight. The rail height from barrel center line is 1.328 inches.