ProMag ProMag Steel Magazine Smith & Wesson M&P9 9mm Blued 10 rd. SMI 23 SMI23

A double-stack 10-rd magazine for the Smith & Wesson M&P� series of pistols in 9x19mm. Constructed from heat-treated blued-steel with a follower lock-plate and base-plate molded from a proprietary DuPont Zytel based black polymer; and using a spring wound from Chrome-silicon wire and heat-treated for strength and reliability.Made in the U.S.A.