This gas block replaces your existing front sight to provide a simple, low profile design that can be used to mount a rifle length forearm to a carbine length barrel. It is Hinged to go around the barrel with a pinned and welded muzzle device. The two screws take a 9/64" Allen Wrench
- Low Profile
- .750" Bore Diameter
- Clamp Screw Mounted
- Weight: 1.98 Oz.
