PROMAG S&W SD40 40S&W 25RD MAG

The ProMag S&W SD40 .40 S&W 25 Round Magazine is an aftermarket high-capacity magazine designed for Smith & Wesson SD40 pistols chambered in .40 S&W. Constructed from heat-treated steel with a black oxide finish and featuring an injection-molded polymer follower and heat-treated chrome-silicone spring, this magazine offers a significant increase in capacity over the standard 14-round factory magazines. Made in the USA, it provides an affordable option for shooters seeking extended range time, though users should note potential feeding issues during initial use and incompatibility with the VE variant of the SD40.