Designed for high-volume target and tactical shooters, the Magpul® D-50® GL9® PCC 9mm 50-round Drum Magazine for Glock®-Compatible PCCs is the ultimate American-made drum magazine, delivering unparalleled firepower in a variety of Glock-compatible Pistol Caliber Carbine platforms. This high-capacity drum magazine comes equipped with an innovative hold-open feature, while the ratcheting loading lever eliminates spring tension for lasting performance and jam-free performance in virtually any environment. The self-lubricating polymer follower ensures proper cartridge alignment and smooth operation under stress. Plus, this Glock-pattern drum magazine features a corrosion-resistant next-generation polymer body, designed to deliver exceptional durability without any added weight. If that’s not enough, this centerfire drum magazine comes equipped with a transparent witness window for quick, visual round counts while on the move. Made in USA.