ProMag builds this double-stack magazine (part no. SMI 22) for the Smith & Wesson M&P series of pistols chambered in .40 S&W, holding 10 rounds in a body constructed from heat-treated blued steel. The follower lock-plate and base plate are molded from a proprietary DuPont Zytel-based black polymer, and the spring is wound from heat-treated chrome-silicon wire for reliability. Made in the USA. For ProMag owners of an M&P .40 S&W pistol, this handgun magazine is a durable, reduced-capacity spare.

Key Specifications

• Chambered in .40 S&W, matching the M&P’s factory chambering.
• Holds 10 rounds in a double-stack body.
• Fits the Smith & Wesson M&P series of pistols.
• Body constructed from heat-treated blued steel.
• Follower lock-plate and base plate molded from DuPont Zytel polymer.
• Spring wound from heat-treated chrome-silicon wire.
• Made in the USA.

Frequently Asked Questions

What pistols does this magazine fit? The Smith & Wesson M&P series chambered in .40 S&W.

How many rounds does it hold? 10 rounds in a double-stack body.

Buy the ProMag S&W M&P .40 S&W Magazine

A heat-treated blued-steel spare with a Zytel-polymer follower and base plate, this ProMag magazine is a durable pick for any M&P .40 S&W. Order it from our Lubbock, Texas gun shop for fast, insured shipping.