Description
PROMAG SMI 31 a 9-round magazine for the Smith & Wesson Shield in .40 caliber. Constructed from heat-treated blued-steel components molded from ProMag rproprietary TECHNAPOLYMER and their anti-fatigue spring so you can keep the magazine loaded and ready for up to six years without concern. ProMag magazines are made in Phoenix Arizona and come with a lifetime warranty.
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