Maximize your firepower and enjoy fewer reloads with the ProMagA(R) AR-15 .223/5.56 65-Round Drum Magazine, designed specifically for the .223/5.56x45mm cartridge. This high-capacity drum magazine features over-molded steel feed lips and a precision-engineered magazine catch cutout for a snug, wobble-free fit. The DuPontA(R) Zytel(TM) polymer body delivers exceptional durability, while the heat-treated chrome silicon wire internal spring eliminates binding for smooth, reliable feeding. If that's not enough, this centerfire rifle magazine is backed by a lifetime warranty for consistent field service you can truly depend on. Made in USA. DuPont Zytel polymer body Over-molded steel feed lips Heat-treated chrome silicon wire internal spring Injection-molded polymer follower Precision-engineered magazine catch cutout