Constructed of durable, yet lightweight stainless steel, the Smith & Wesson® Model 5900 Series Full Size 9mm 10-Round Magazine offers unmatched strength and corrosion resistance for lasting reliability in virtually any environment. The injection-molded polymer follower and steel wire spring deliver smooth feeding operation, while the precision-engineered magazine catch and reinforced feed lips ensure a snug, wobble-free fit and reliable lock-up for improved reliability under stress. Machined witness holes allow for quick, visual round counts, and the shock-resistant polymer floor plate is easily removed when maintenance and cleaning are required.