Wanting to trade my unused 23 round mags for 3 unused still in box, standard 15 round M&P mags. These are directly from S&W and are not aftermarket. These fit flush with my M&P compact with out the magazine slip on and fit flush with a full size without the slip on. These also fit in the stock of a M&P FPC folding carbine. Text me 817 706 2944.