The Mag Charger Universal Pistol Loader from Caldwell Shooting Supplies replaces the process of thumbing rounds into a magazine with a simple squeeze. Two rotating lugs and a rear tensioning screw facilitate a snug fit for magazines big or small, single- or double-stack, designed for cartridges from 9 mm Luger to .45 ACP—and most .380s. After dropping a fresh round in to the loading port, a squeeze of the lever will lift it into the magazine’s feed lips, and then fully seat the round by pressing it to the rear.