GB940: Picatinny Gas Block, Bull Barrel .940"

Gas Block, Standard Barrel. For barrels with a .940" diameter at the front sight base/gas block area. This is the industry standard "bull barrel' dimension. This is a "same plane" gas block where the picatinny rails are at the same level/plane as the picatinny rails of your upper receiver. Requires use of "same plane" detachable sights. Made from solid extruded aluminum with hard anodized finish. Has picatinny dimension rails on top, and two locking screws on the bottom. Comes complete with extra-long gas tube roll pin. 100% designed, machined and coated in the USA.