Introducing the new Promag Smi 31 a 9-round magazine for the Smith & Wesson Shield in .40 caliber. Constructed from heat-treated blued-steel components molded from ourproprietary Technapolymer and our anti-fatigue spring so you can keep the magazineloaded and ready for up to six years without concern.
PRO MAG | UPC: 708279012082
