Yankee Hill Machine (YHM) Low Profile Gas Block Set Screw
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 set screws.
Manufactured from high quality steel and finished with a mil. spec. phosphate coating.
Length: 0.95"Bore diameter of .750 inches.
Made in the U.S.A.