ProMag S & W 910, 915, 459 & 5900 Series 9mm (15)Rd Blue Steel Magazine.
A double-stack 15-rd magazine for the Smith & Wesson 910, 915, 459, and 5900 series of pistols in 9mm. Constructed from heat-treated blued-steel, with a follower, lock-plate, and base-plate molded from a proprietary DuPont® Zytel™ based black polymer; and using a spring wound from Chrome-silicon wire and heat-treated for strength and reliability.