Elite Tactical Systems(R) Coupled Gen 2 magazine is designed for compatible AR-15-pattern firearms chambered in .223 Remington and 5.56 NATO. The polymer magazine provides a 30-round capacity and incorporates a coupled magazine design for compatible AR-15 applications. This Gen 2 configuration features a black finish and functions as a detachable rifle magazine.Key Features Designed for compatible AR-15-pattern firearms Compatible with .223 Remington and 5.56 NATO ammunition 30-round capacity Coupled Gen 2 magazine configuration Polymer construction Black finishElite Tactical Systems(R) manufactures firearm magazines and accessories for a variety of popular firearm platforms. The company specializes in lightweight polymer magazine designs with an emphasis on durability visibility and dependable function. ETS products are manufactured with attention to compatibility material performance and consistent operation.