Specifically engineered for use in personal defense and concealed-carry applications, the Ruger® Security-9® 9mm 17-Round Magazine is a standard OEM factory replacement magazine, designed to deliver reliable performance with the Ruger Security-9, Security-9 Pro, and the iconic PC Carbine. Constructed of black oxide-finished alloy steel with an impact-resistant polymer floor plate, this magazine offers lasting durability and superior corrosion resistance, while numbered witness holes make for quick round counts. Better yet, this magazine features a steel wire spring and a polymer anti-tilt follower for smooth, snag-free feeding. Order yours today and enjoy reliable firepower and superior concealment without breaking the bank. Made in USA.