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 manufacturers defects. Made in USA

Features :

• 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

Magazine Restrictions:

The following states have magazine restrictions. Your order will not ship to those states if in violation of these laws and will be subject to cancellation and a 15% restocking fee.

California - Limited to 10-round capacity.
Connecticut - Limited to 10-round capacity.
Colorado - Limited to a 15-round capacity.
Delaware - Limited to 17-round capacity.
Hawaii - Handguns limited to 10-round capacity
Illinois (Cook Co, Aurora, Highland Park) - Pistol mags are limited to 10 rounds.
Massachusetts - Limited to 10-round capacity.
Maryland - Limited to 10-round capacity.
New Jersey - Limited to 10-round capacity.
New York - Limited to 10-round capacity.
Road Island - Limited to 10-round capacity.
Vermont - Handguns limited to 15-round capacity, Rifles limited to 10-round capacity.
Washington DC - Limited to 10-round capacity.
Washington - Limited to 10-round capacity.