The MagPump AR-15 Magazine Loader 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.MagPump AR-15 Hopper Fed Magazine Loader90-round capacity hopper for bulk loadingPump-action lever self-sorts ammunition in either directionLoads up to 60 rounds in less than 60 secondsCompatible with all Mil-Spec AR-15 magazinesWorks with .223 Rem 5.56 NATO and .300 Blackout roundsPolymer construction for durabilityPerfect for competitive shooters training sessions and range enthusiasts who want to spend more time shooting and less time loading magazines manually.