PROMAG SMI31 S&W M&P Shield .40 S&W 9-Round Magazine

The ProMag SMI31 is a replacement or spare magazine for the Smith & Wesson M&P Shield chambered in .40 S&W. It provides a 9-round capacity and is constructed from steel for use with a compatible centerfire pistol.

The magazine includes an injection-molded follower and a spring formed from heat-treated chrome silicone wire. It is made in the USA and backed by a lifetime guarantee against manufacturer defects.

Key Specifications

• The magazine fits the Smith & Wesson M&P Shield pistol.
• The listed caliber is .40 S&W.
• The magazine holds 9 rounds.
• The magazine body is made from steel.
• The listed finish is blued.
• The magazine is designed for a centerfire pistol.
• The follower is injection molded.
• The spring uses heat-treated chrome silicone wire.
• The magazine is made in the USA.
• The product type is detachable.

With its defined fit, practical 9-round capacity, and steel construction, the ProMag SMI31 provides a straightforward magazine option for compatible Smith & Wesson M&P Shield .40 S&W pistols.