The Caldwell AR-15 Mag Charger was designed to assist in loading 30-round magazines for AR-style rifles. Ammunition boxes or a provided transfer tray can be used to quickly load the 50-round charger—align the cartridges with the loading ports and dump, ensuring they land “bullet down” in the charger. Once loaded, snap a magazine into the well and, using the plunger, start pumping to fill the mag in seconds. Watch the video below as Joe Kurtenbach demonstrates how to use this handy tool.