Fast and efficient speed loading for high capacity magazines. Works with Magpul or metal magazines for AR15/M16 style rifles chambered in .223 and .556 calibers. Simply insert magazine, hold up at angle, load ammo into tray, close lid and pull handle. Loads up to a full box of 20 rounds with each pull. Made in the USA of high density nylon fiberglass. Comes with a lifetime warranty from the Cammo Brothers and SpeedloaderZ, "NO QUESTIONS ASKED".