ProMag SMI30 S&W M&P Shield .40 S&W 7rd Handgun Magazine, Blued Steel - SMI30

ProMag SMI30 is a 7-round detachable magazine chambered in .40 S&W, designed specifically for the Smith & Wesson M&P Shield platform. Constructed from heat-treated blued steel with ProMag's proprietary TECHNAPOLYMER components and anti-fatigue spring technology, allowing the magazine to remain loaded for up to six years without concern. Made in Phoenix, Arizona with a lifetime warranty.