Specifically designed for use with 2.75" shells, the Mossberg® 590M 12-Gauge 20-Round Magazine is a genuine Mossberg factory shotgun magazine, featuring a patented double-stack design, built around a durable, yet lightweight self-lubricating polymer body with steel-reinforced feed lips for superior reliability and lasting field service. The steel wire spring and hi-vis polymer follower deliver smooth feeding performance, while the over-molded shell ramps deliver smooth, jam-free operation in high-stress environments. Better yet, the injection-molded extended polymer floor plate offers quick disassembly for frustration-free maintenance and cleaning when required. Enjoy reliable firepower at an affordable price. Order today!