The magazine clamps hold two AR-15/Mini-14 polymer, steel or aluminum magazines side for quick reloading. The clamps position the magazines and the loaded ammunition pointing in the same direction. This four pack will "jungle clip" two pairs of magazines. Two magazine clamps are required to clamp two polymer, steel or aluminum AR-15 magazines. Manufactured from injection molded, glass filled Mil-Spec black polymer. All hardware included. No permanent modification required.