WHAT DOES FO FRONT MEAN?

† NOTE: The receiver-mounted, Picatinny-fashion rail is intended to support most optics and optic mounts supposed to be used with Picatinny/ MIL-STD 1913 rails. However, on account of reduced clearance among the highest with the receiver and the bottom of your optics rail, optics and optic mounts that stretch in excess of .In the event your deal