This hopper-fed loose-ammo loader is engineered to minimize hand fatigue and cut magazine loading time by over 50%. With a 90-round capacity hopper, simply load your ammunition and let MagPump handle the rest. Its pump-action lever efficiently self-sorts ammo in both directions, loading up to 60 rounds in under a minute. Designed for seamless compatibility with all Mil-Spec AR-15 magazines, it supports .223 Rem, 5.56 NATO, and .300 Blackout rounds. Hopper fed, loose ammo loader for .223 Remington, 5.56 NATO and .300 Blackout rounds This standard model is constructed of lightweight and durable polymer Compatible with all Mil-Spec AR-15 magazines Built-in safeties prevent damage to rounds when loading and stop loading when magazine is full Eliminates hand fatigue caused from loading Reduces magazine loading time by more than 50% Mounts to any Weaver or Picatinny rail 90 round capacity hopper Orient ammunition in either direction Requires much less physical effort and strength to fully load magazines