This 50-round drum magazine is designed for Glock Model 20 10mm pistols, offering extended capacity and dependable performance. Constructed from durable polymer and quality internal components, it delivers smooth feeding and long-lasting reliability for high-volume shooting. Product Details Capacity: 50 rounds Compatibility: Glock Model 20 10mm pistols Material: DuPont Zytel based polymer magazine body Injection molded follower Heat-treated stainless steel spring Made in the USA