Let freedom ring with the ProMag® Smith & Wesson® Shield® 9mm 50-Round Drum Magazine from GunMag Warehouse. Trusted by experienced target shooters, preppers, and civilian tacticians across the country, his high-capacity drum mag features a durable DuPont™ Zytel® polymer drum housing for lasting performance and durability, while the steel upper magazine tower ensures a factory-like fit for optimal performance. Plus, a heat-treated stainless steel wire spring eliminates binding, ensuring the injection-molded polymer follower operates flawlessly for reliable feeding. Backed by ProMag's no-questions-asked lifetime warranty. Made in USA.