Product Description The ProMag GLKA17 is a Glock-compatible detachable handgun magazine designed to fit Glock 21 and Glock 30 pistols chambered in .45 ACP. It features a rugged DuPont Zytel polymer body with a full-length steel internal insert for added strength, plus an injection-molded follower and a chrome silicone wire spring for reliable feeding. Finished in black and made in the USA, this 22-round magazine is built for dependable performance on the range and during training. Product Highlights Glock-compatible magazine designed to fit Glock 21 and Glock 30 pistols High-capacity 22-round .45 ACP detachable magazine DuPont Zytel polymer body with full-length steel internal insert for durability Injection-molded magazine follower for consistent feeding Chrome silicone wire spring; made in the USA Specs Brand: ProMag Manufacturer Part Number: GLKA17 UPC: 708279014758 Caliber: .45 ACP Capacity: 22 rounds Compatibility: Glock 21, Glock 30 Magazine Type: Detachable Material: DuPont Zytel polymer with full-length steel internal insert Color/Finish: Black Spring Material: Chrome silicone 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.