ProMag S&W M&P-9 Double Stack 9mm 32-Round Blued Steel Magazine

A double-stack 32-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.