The Magpul PMAG D-50 GL9 PCC 9mm Drum Magazine is a lightweight, ultra-reliable 50-round high-capacity feeding system engineered specifically for 9mm Pistol Caliber Carbines (PCC) and sub-guns that utilize Glock-pattern magazine wells. Utilizing a unique, shortened feed tower geometry, this model maximizes reliability and mitigates clearance issues common in long-gun magwells, ensuring it seats perfectly in dedicated rifle receivers. The internal components feature a rear-facing ratcheting lever that mechanically takes spring tension off the follower to make loading quick and effortless. To simplify tracking, the rear of the impact-resistant polymer drum features a transparent window layout alongside a high-visibility follower, letting the shooter monitor remaining ammunition counts at a glance during intensive tactical drills or competitive PCC match stages. Complete with a snap-on impact dust cover to seal out debris during storage, this rugged drum provides a reliable, heavy-duty solution that ensures consistent feeding performance without the awkward vertical length of extended stick magazines. Magpul PMAG D-50 GL9 PCC 9mm 50rd Black Polymer Drum Magazine MAG1137-BLK