30450 : M4 RAS HARDWARE KIT

The KAC Medium URX II free floating forend features an integral, flip-up front sight assembly that folds flush with the continuous top rail when not in use, creating a seamless look. Full length mil-spec M1913 Picatinny rails are located at the 3-, 6-, and 9 o'clock positions, making the URX II compatible with any number of rail-mounted tactical accessories. Includes three KAC 11 Rib Rail Panels.