Promag S&w Sd40 40sw 25rd Blue Steel

The ProMag S&W SD40 .40 S&W 25-round magazine is a domestically manufactured high-capacity magazine engineered for reliable feeding in Smith & Wesson SD40 compact pistols. Built with precision-wound, heat-treated chrome silicon wire springs and steel construction throughout, this 25-round magazine provides shooters with extended firepower during training, duty cycles, or defensive scenarios where reload intervals matter.

Each component is assembled and inspected in the United States to maintain consistent quality standards. The heat-treated chrome silicon spring resists fatigue and compression set, ensuring reliable feeding across thousands of cycles without the spring weakness that degrades performance in lesser magazines. The 25-round capacity delivers significant ammunition reserve without sacrificing the compact profile of the SD40 platform. Magazine dimensions of 3.75 x 1.5 x 14 inches accommodate both standard and extended carry configurations, though users should verify holster and retention compatibility with this extended-capacity design.

This magazine suits law enforcement, armed civilians, and range practitioners who run the SD40 and seek reliable spare magazines or backup capacity. ProMag backs the product with a lifetime warranty against manufacturer defects, removing the risk of a defective spring or feed lip failure in the field. For shooters standardizing on the SD40 platform, additional 25-round magazines ensure adequate training volume and duty-ready reserves without relying on multiple magazine sources.

The .40 S&W cartridge occupies a middle ground between 9mm and larger calibers, offering higher energy than 9mm with less recoil than .45 ACP. Extended-capacity magazines like the 25-rounder maximize this advantage by increasing on-board ammunition without adding significant bulk compared to single-stack single-column designs.

SKU: MGPMSMI-A17 | UPC: 708279012648