ProMag Smith Wesson MP magazine is constructed from heat-treated blued-steel, with components molded from their proprietary Technapolymer and anti-fatigue spring, so you can keep the magazine loaded...
A double-stack 32 round magazine for the Smith & Wesson M&P series of pistols in caliber .40S&W. Constructed from heat-treated blued-steel, with a follower, lock-plate, and base-plate...