ProMag 15 Round 9mm Double Stack Magazine, Blue – SMIA1

This double-stack replacement magazine for your Smith & Wesson 910, 915, 459, or 5900 pistol is constructed from heat-treated blued-steel. Included is an follower, lock-plate, and base-plate molded from a proprietary DuPont Zytel based black polymer. It uses a spring wound from chrome-silicon wire and heat-treated for strength and reliability.ProMag magazines are designed utilizing traditional stamping and welding of heat-treated high carbon steel. Every ProMag magazine is backed by a lifetime guarantee against manufacturer’s defects.Features:Magazine body constructed of heat treated carbon steel with black oxide finishInjection molded magazine followerMagazine spring formed from heat treated chrome silicone wireMade in USA