"Do not be mislead by the fact that these are listed under Smith and Wesson magazines. These are not original S&W. My first clue was the plain plastic bag I received them in. The second clue was the scraps from previous attempts to fit in an unloaded mag. into the well. a loaded mag. would not fit under any circumstance. As soon as I began loading the mag I could see theoverall shape of the mag change. Unless you enjoy returning items,do not order these magazines for a S&W MP15."