ProMag 50-Round Drum Magazine for S&W SD40

Elevate your shooting sessions with the ProMag 50-Round Drum Magazine, tailored for the Smith & Wesson SD40 .40 S&W. Featuring a robust 50-round capacity, this magazine is crafted from durable DuPont Zytel-based polymer and includes a hybrid steel upper magazine tower for seamless feeding. Its injection molded magazine follower ensures smooth operation, while the heat-treated stainless steel spring enhances longevity. Proudly made in the USA, this magazine is essential for SD40 owners seeking extended shooting capabilities.