PTR Industries Firearms(R) magazine is designed for compatible PTR 91 rifles chambered in 7.62x51 NATO and .308 Winchester. The detachable magazine provides a 10-round capacity and features aluminum construction with a black finish. It provides a replacement or additional magazine option for compatible PTR 91 rifle applications.Key Features Designed for compatible PTR 91 rifles Compatible with 7.62x51 NATO and .308 Winchester ammunition 10-round capacity Aluminum magazine construction Detachable magazine design Black finishPTR Industries Firearms(R) manufactures firearms magazines components and accessories for sporting and recreational applications. The company develops products with an emphasis on durable construction functional design and firearm compatibility. PTR Industries Firearms products are manufactured with attention to fit dependable operation and consistent performance.