ProMag Steel Handgun Magazine S&W SD40 .40 S&W Blued 10/rd

The ProMag Steel Handgun Magazine S&W SD40 .40 S&W Blued 10-round is a dependable steel magazine purpose-built for Smith & Wesson SD40 pistols. This magazine serves law enforcement, security professionals, and civilian shooters who demand reliable ammunition capacity in their duty or defensive sidearm. Steel magazines have proven themselves in operational environments where durability and consistent performance are non-negotiable, making this 10-round variant compliant with magazine capacity restrictions in regulated jurisdictions while maintaining full functionality.

Constructed from hardened steel with a blued finish, this ProMag magazine delivers corrosion resistance and longevity under field conditions. The steel body and feed lips are engineered to maintain consistent round positioning and reliable feeding of .40 S&W ammunition through the SD40's chamber. The 10-round capacity is achieved without compromising structural integrity, and the magazine's compact profile—measuring 2.9 by 1.6 by 9.2 inches and weighing just 0.27 pounds when empty—ensures it seats flush in the SD40 platform without adding unnecessary bulk to your carry setup. Steel construction also provides superior impact resistance compared to polymer alternatives, an important consideration in tactical or duty scenarios.

This magazine is ideal for officers and shooters operating in states or departments with 10-round magazine limits, as well as those who simply prefer the durability of steel over polymer. It is fully compatible with all S&W SD40 variants and will function seamlessly as a direct replacement or backup magazine in your magazine rotation. For maximum reliability, rotate magazines periodically and inspect the feed lips for any signs of wear. ProMag's SMI 33 magazine represents a practical, cost-effective solution for expanding your SD40 ammunition capacity without sacrificing performance or compliance.