ProMag magazines are made in the USA and backed by a lifetime guarantee against manufacturer's defects. Magazine springs are precision wound using heat-treated chrome silicon wire and each and every step of the assembly process is checked and double checked in order to maintain the same consistent level of quality.Features:20 - Round CapacityHeat-Treated Chrome Silicon Wire SpringManufactured & Assembled in the U.S.A.Easy LoadingRugged ConstructionSpecificationsManufacturer Part #: DPM-A1Type: MagazineCaliber: 308 WinchesterCapacity: 20 RoundsColor: BlackFit: DPMS LR-308, SR-25