Front Sight Assembly, "F" Marked, .750
front sight assembly, all of the front sight hardware and the front sling
loop are pre-installed, so the only thing left to do is drill and pin the
assembly to your barrel. Designed for barrels with .750"
diameter gas journals approximately 2" long. "F" marked
designating for use with flat-top style upper receivers(~.040" taller than
a standard front sight).
Must be installed on to the barrel, then drilled with the barrel in place
and finally pinned in place with the barrel.