Iver Johnson Glock 40 S&W 50-Rd Drum Magazine - Black Polymer

The Iver Johnson 50-Round Drum Magazine delivers high-capacity feeding for Glock .40 S&W pistols in a rugged drum configuration. Built around the double-stack Glock magazine well, this aftermarket drum extends round count well beyond standard factory box magazines for extended range sessions, training courses, or competition shooting.

The drum housing is molded from impact-resistant black polymer combined with internal steel components, including a heavy-duty wound steel spring and a stainless steel follower for smooth, consistent feeding. The polymer body keeps overall weight manageable despite the 50-round capacity, and the drum profile maintains a usable footprint at the bench.

Whether you are running extended training drills, dialing in a defensive pistol, or staging a practice session, the Iver Johnson Glock .40 S&W drum magazine is purpose-built for shooters who need a substantial round count on tap from their Glock-pattern handgun.