Product Description The ProMag GLK-A12 pistol magazine is a durable, USA-made replacement magazine designed to fit GlockA(R) Model 22, 23, and 27 pistols chambered in .40 S&W. It features a rugged black polymer body (DuPont(TM) ZytelA(R)-based) with a full-length steel internal insert for strength similar to factory-style construction. Built for long-term reliability, it uses an injection-molded follower and a precision-wound, heat-treated chrome silicon spring. ProMag magazines are backed by a lifetime guarantee against manufacturer&&';;s defects. Product Highlights 15-round capacity magazine for GlockA(R) 22/23/27 pistols in .40 S&W Black DuPont(TM) ZytelA(R)-based polymer body for durable everyday performance Full-length steel internal insert stamped and welded like factory magazine construction Heat-treated chrome silicon spring and injection-molded follower for consistent feeding Made in the USA and backed by ProMag&&';;s lifetime guarantee against manufacturer defects Specs Brand Name: ProMag Industries Manufacturer Part Number: GLK-A12 UPC: 708279013690 Firearm Compatibility: GlockA(R) 22 / 23 / 27 Caliber: .40 S&W Capacity: 15 rounds Color: Black Body Material: Polymer (DuPont(TM) ZytelA(R)-based) Internal Reinforcement: Full-length steel internal insert Follower: Injection molded Spring Material: Heat-treated chrome silicon wire Country of Manufacture: USA Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.