ProMag Industries, Magazine, 5.7X28MM, 55 Round Drum, Fits FN Five Seven IOM/USG Pistol, Polymer, Black

ProMag magazines are designed utilizing both traditional stamping and welding of heat-treated high carbon steel, and modern precision injection molding of mil-spec polymer compounds. Every ProMag magazine is backed by a lifetime guarantee against manufacturer's defects. Made in USA

• 55-round drum magazine
• Fits FN Five-seveN USG 5.7x28mm pistol
• Magazine body constructed of a proprietary DuPont Zytel based polymer
• Blue steel upper magazine tower
• Injection molded magazine follower
• Magazine spring formed from heat treated stainless steel
• Made in USA