Description
The ProMag FN Five Seven IOM USG 5.7X28MM 55 Rd Drum-FDE is a 55 round drum magazine that fits the FN Five-seveN USG 5.7x28mm pistol. The magazine body is constructed of a proprietary DuPont Zytel based polymer. It features a blue steel upper magazine tower and and injection molded magazine follower. The magazine spring is formed from heat treated stainless steel.
