Product Description The ProMag Industries DRM-A103 is a high-capacity 50-round drum magazine engineered to fit U.S. M1 Carbine rifles chambered in .30 Carbine. Built for durability and consistent feeding, it features a proprietary DuPont Zytel-based polymer drum body paired with a hybrid steel/polymer upper magazine tower for strength where it matters most. An injection-molded follower and a heat-treated stainless-steel spring help promote reliable cycling, and the magazine is made in the USA and backed by ProMag&';s lifetime guarantee against manufacturer&';s defects. Product Highlights 50-round drum magazine designed for extended shooting sessions with fewer reloads Fits U.S. M1 Carbine platforms chambered in .30 Carbine Proprietary DuPont Zytel-based polymer body for lightweight, impact-resistant performance Hybrid steel/polymer upper magazine tower adds rigidity and support for dependable fit Injection-molded follower and heat-treated stainless-steel spring support consistent feeding Specs Brand: ProMag Industries Manufacturer Part Number: DRM-A103 UPC: 708279016271 Magazine Type: Drum magazine Capacity: 50 rounds Compatibility: U.S. M1 Carbine Caliber: .30 Carbine Color: Black Body Material: Proprietary DuPont Zytel-based polymer Upper Magazine Tower: Hybrid steel/polymer Follower: Injection-molded polymer Spring: Heat-treated stainless steel 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.