ProMag FN Five-SeveN 5.7X28mm AR Carbine 55Rd Drum 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

Specifications:

• 55-round drum magazine
• Fits the FN 5.7X28MM AR style carbine
• 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