WHAT DOES FO FRONT MEAN?

† Take note: The receiver-mounted, Picatinny-fashion rail is developed to support most optics and optic mounts intended for use with Picatinny/ MIL-STD 1913 rails. Nevertheless, on account of minimized clearance involving the best of your receiver and the bottom of your optics rail, optics and optic mounts that extend in excess of .In case your o