The ProMag Polymer Drum Magazine AR-15 Glock 9mm Black 50 rd. is an exceptional option for firearm enthusiasts who prioritize reliability and performance in their shooting endeavors. Specifically designed for 9mm AR-15 carbines that utilize Glock type magazines, this drum magazine boasts a remarkable 50-round capacity, ensuring that you have plenty of ammunition ready for any situation. Crafted from a proprietary DuPont Zytel-based polymer, the magazine's housing is both lightweight and durable, making it ideal for rigorous use in various conditions. The upper tower is reinforced with a full-length steel internal insert, meticulously stamped and welded to replicate the quality of factory magazines, which guarantees seamless integration and optimal performance. Additionally, the injection molded follower enhances reliability, while the heat-treated stainless steel spring ensures consistent feeding and longevity, making it a dependable choice for your shooting needs. This flush fit drum magazine is expertly tailored for PCC applications, providing a perfect fit for Glock type magazines. Proudly made in the U.S.A., the ProMag drum magazine reflects superior American craftsmanship and innovation, making it an essential accessory for those looking to elevate their shooting capabilities with a high-capacity magazine solution.