PRI AR-15 Gas Block With Top Picatinny Rail
This Barrel mounted gas block has a 2 1/2" top rail same plain as the reciever. The rail is constructed of light wait hard coat aluminum. This AR15 gas block weights 2.5oz. Gas block fits over a .750 diameter barrel. Block locks into place with 2 crossbolts the same as our original gas block front sight.
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