YHM LOW PROFILE HINGED GAS BLOCK Yankee Hill .750
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
.750" Bore Diameter
Clamp Screw Mounted
Weight: 1.98 Oz.
DO NOT TIGHTEN SCREWS TO MORE THAN 40 INCH POUNDS.