The Caldwell AR 15 Mag Charger has revolutionized the way ammo is handled and loaded into AR 15 mags. Simply align bullet tips of a factory 50 round box with the Mag Charger and dump. The charger will load 5 rounds with each stroke of the plunger as the spring loaded ammo carrier automatically advances aligning the next 5 rounds. No longer does each round have to be hand loaded into the magazine, with the Mag Charger 50 rounds can be loaded in as little as 15 seconds! Load AR mags in just secondsAccepts 50 rounds of 223, 5.56 or 204Instant transfer system from ammo box directly to mag chargerLoads 5 rounds per strokeCompatible with mil spec and molded plastic mags