For AR-15 pattern firearms chambered in 5.56x45mm or 223 Remington. The drum feeds alternately from the left and right sides using two independent follower belts to maintain a balanced center of gravity while firing. Features steel-reinforced feed lips for added durability and reliable feeding.  This package includes the KCI USA 100 Round Drum, Operator’s Manual, Carrying Pouch, Graphite Lubricant, and Loader.

Disclaimer:  Lifetime Warranty VOIDED if customer disassembles magazine! This magazine is designed to be used with FMJ ammunition.

Hollow-point, Soft Point, or other specialty ammunition may cause feeding malfunctions.

Note: Designed to work with Mil-Spec forged lowers, and may not work with some billet or specialty lower receivers with flared mag wells.