Crafted from lightweight blued steel with heat-treated chrome silicon springs and ultra-tough Zytel™ polymer baseplates & followers, the ProMag® Sig Sauer® Sig Pro 9mm 10-Round Blue Steel Magazine is an affordable aftermarket pistol, engineered to deliver combat-ready performance at a price that’s hard to beat. Sig Sauer® PRO handguns have long been on the cutting edge of polymer pistol innovation. The company’s first polymer pistol with an accessory rail and interchangeable grips remains a reliable and combat-ready choice for law enforcement officers around the world. These 10-round magazines are perfect for target practice, training, and tactical drills. Like all ProMag magazines, they come with a lifetime guarantee, ensuring superior quality and lasting reliability in virtually any target-rich environment. Order yours today! Made in USA.