PROMAG S&W 5900
This doublestack replacement magazine for your Smith Wesson 910 915 459 or 5900 pistol is constructed from heattreated bluedsteel. Included is an follower lockplate and baseplate molded from a proprietary DuPont Zytel based black polymer. It uses a spring wound from chromesilicon wire and heattreated for strength and reliability.
