The Caldwell Mag Charger TAC-30 is designed to directly accept 20 live rounds from any common 20 round ammo manufacturer box and will also conveniently accept up to three 10 round stripper clips. The entire process of filling the Mag Charger TAC-30 with ammo and loading all 20 to 30 rounds into a magazine takes less than 10 seconds. Spend more time shooting and less time reloading with the Caldwell Mag Charger TAC-30. Load AR magazines in just seconds Accepts 30 round of 223, 5.56 or 204 Transfer directly from a 20 round box, a stripper clip or using the included stripper rail to mag charger Loads 10 round per stroke with auto advance