ProMag builds this magazine (part no. SMI 31) as a replacement or spare for the Smith & Wesson M&P Shield, chambered in .40 S&W. The body is heat-treated steel finished in blue, with an injection-molded follower and a spring formed from chrome silicone wire, and it’s assembled in the USA. For ProMag owners running a .40-caliber M&P Shield, this handgun magazine is a direct-fit spare.

Key Specifications

• Chambered in .40 S&W.
• Holds 9 rounds.
• Fits the S&W M&P Shield.
• Built from heat-treated steel, finished in blue.
• Uses an injection-molded follower and a chrome silicone wire spring.
• Assembled in the USA.
• A detachable magazine, dropping free for fast reloads.
• Carries the manufacturer’s Standard model designation.
• Classified by the manufacturer as a Magazine.
• Weighs approximately 0.28 lb as shipped.
• Sold individually, one per package.

Frequently Asked Questions

What pistol does this fit? The Smith & Wesson M&P Shield, chambered in .40 S&W.

What’s it made of? Heat-treated steel with a blued finish, an injection-molded follower, and a chrome silicone wire spring.

Buy the ProMag S&W M&P Shield 9-Round Magazine

A blued-steel factory-pattern spare, this ProMag magazine is an easy backup for your .40-caliber Shield. Order it from our Lubbock, Texas gun shop for fast, insured shipping.