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.
Bore diameter of .750 inches.
Made in the U.S.A.
Know all your state laws before purchase is made.