Product Description The ProMag Industries DRM-A11 is a 50-round 9mm drum magazine designed to fit Glock Model 17/19 pistols. Built for rugged, high-capacity performance, this black polymer drum features a durable construction, an injection-molded follower, and a precision-wound, heat-treated spring for reliable feeding. Made and assembled in the USA, it is backed by ProMag&';s lifetime guarantee against manufacturer&';s defects. Product Highlights High-capacity 50-round 9mm drum magazine for compatible Glock 17/19 platforms Proprietary polymer drum body designed for rugged use and long service life Precision-wound, heat-treated spring for consistent feeding performance Injection-molded magazine follower supports reliable operation Manufactured and assembled in the USA; backed by a ProMag lifetime guarantee Specs Brand: ProMag Industries Manufacturer Part Number: DRM-A11 UPC: 708279014383 Caliber: 9mm Capacity: 50 rounds Type: Drum magazine Color: Black Body Material: Polymer (DuPont Zytel-based, per manufacturer) Follower: Injection molded Spring: Heat-treated chrome silicon wire (per source data) Country of Manufacture/Assembly: 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.