This is a ProMag® STEEL 15-round magazine for Smith & Wesson 910, 915, 459, and 5900 Series pistols in 9mm
Built from heat-treated steel with ProMag’s anti-fatigue internal springs and ultra-durable DuPont® Zytel™ polymer baseplates, these magazines deliver serious combat- and concealment-ready performance. Combining durable carbon steel and aluminum construction with value-friendly features & pricing, Smith & Wesson’s “Value Series” pistols (including the 910, 915, 459, and 5900) deliver robust and reliable performance at a price that’s tough to beat. Like all ProMag magazines, they come with a lifetime replacement guarantee—so you’ll always have a working mag on hand.