The MagPump Pro Speedloader takes the best of the standard MagPump and improves upon it. Like its counterparts” the AR-15 Pro is a hopper-fed” loose-ammo loader designed to eliminate hand fatigue and reduce magazine loading time by more than 50 percent. Simply load your ammo in the 90-round capacity hopper and let MagPump do the rest. The machined aluminum pump-action lever self-sorts ammunition in either direction. Improvements include steel internal components and sealed ball bearings to increase loader efficiency and enhance operation” loading up to 60 rounds in less than 60 seconds. Compatible with all Mil-Spec AR-15 magazines” and .223 Rem” 5.56 NATO and .300 Blackout rounds.