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 mounted by the use of two clamping screws. The two screws take a 9/64" Allen Wrench
- Manufactured from high quality steel, finished with a mil. spec. phosphate coating.
- Length: 0.95"
- Bore diameter of .750 inches.
- Weight: 2.016 Oz.