Caliber/Gauge
40 SW
SMI-A11 A double-stack 15-rd magazine for the Smith & Wesson M&PĀ® series of pistols in caliber .40S&W. Constructed from heat-treated blued-steel, with a follower, lock-plate, and base-plate molded from a proprietary DuPontĀ® Zytel? based black polymer.