Iver Johnson Drum Magazine for Glock Features The Iver Johnson Drum Magazine for Glock holds an impressive 50 rounds of .40 S&W giving shooters a dramatic increase in capacity over standard box magazines. This drum design is built specifically for double stack magazine configuration firearms ensuring proper fit and feeding geometry for compatible Glock pistols. Steel and polymer construction combines the strength needed to reliably feed 50 rounds with the lighter weight polymer provides in non-structural areas. This high round count makes the drum well suited to extended range sessions training days and competitive shooting where magazine changes slow down the pace. Finished in black the drum magazine presents a clean tactical appearance that matches most Glock pistol finishes. The drum s capacity reduces the frequency of reloads significantly compared to standard 15 or 22-round magazines which can be a meaningful advantage in training scenarios or extended shooting sessions. Built specifically for .40 S&W double stack Glock platforms this magazine is intended as an aftermarket accessory and is not manufactured or endorsed by Glock. For shooters wanting maximum capacity from their double stack Glock pistol the Iver Johnson Drum Magazine delivers a substantial round count in a single reload. Iver Johnson Drum Magazine for Glock Specifications Manufacturer: Iver Johnson Model: Drum Magazine for Glock Caliber: .40 SW Capacity: 50 Rounds Material: Steel & Polymer Color: Black Compatible Hosts: Glock Double Stack .40 S&W Available At: GrabAGun