Butler Creek ASAP Loader, Loads 556NATO/223Remington AR15 Magazines, Gray BCAAR15ML The Butler Creek ASAP Universal AR15/M16 Magazine Loader fills up mags almost as fast as they can be emptied. Loose ammo can be loaded one round at a time with at simple click" or engage the loading arm to expedite the process. The loading arm can handle up to 10 rounds of loose ammo" or ammo in a stripper clip" and the rounds are locked into the mag with a quick push. Spend more time shooting" and less time reloading.