The ProMag Standard 9mm 15rd Steel Double Stack Magazine is a reliable and durable accessory designed for your S&W 910 915 459 and 5900 models. Constructed from heat-treated steel this magazine ensures long-lasting performance and durability under rigorous conditions. Its injection-molded follower and mag spring crafted from chrome silicone wire provide smooth and consistent feeding for optimal functionality. With a sleek oxide finish and a 15-round capacity this USA-made magazine is the perfect blend of quality and performance for your firearm.