ProMag 55rds 5.7x28mm Drum Magazine FDE

Holds up to 55-round in the drum magazine Designed for the FN Five-seveN USG 5.7x28mm pistol Magazine body constructed of proprietary DuPont Zytel based polymer Built with a blue steel upper magazine tower Injection molded magazine follower for smooth operation Includes a magazine spring formed from heat-treated stainless steel Made in the USA for premium quality