The Wilson Combat 1911 Elite Tactical 9mm 10-Round Steel Magazine with Aluminum Base Pad is a performance-enhanced centerfire pistol magazine, designed to deliver match-grade field performance with virtually any 1911 pistol model chambered in 9mm. This magazine features a corrosion-resistant, heat-treated stainless steel tube with precision-machined witness windows for quick, at-a-glance round counts. The high-tensile, heavy-duty spring offers long-lasting feeding performance and a positive slide stop operation for enhanced reliability, while the self-lubricating, fiber-filled nylon follower eliminates binding for smooth performance. The removable aluminum base pad makes for easy maintenance and cleaning. Better yet, this performance-enhanced magazine is polished using a multi-step tumbling and finishing process, specifically designed for smooth operation and snag-free insertion into the weapon for added reliability.