FAB Defense(R) Ultimag magazine is designed for compatible Glock 19 pistols chambered in 9mm. The detachable magazine provides a 16-round capacity and features polymer construction with a black finish. It provides a replacement or additional magazine option for compatible Glock 19 applications.Key Features Designed for compatible Glock 19 pistols Designed for 9mm ammunition 16-round capacity Polymer magazine construction Detachable magazine design Black finishFAB Defense(R) manufactures firearm components and accessories for a variety of handgun and rifle platforms. The company develops purpose-built products with an emphasis on functional design durable materials and firearm compatibility. FAB Defense products are manufactured with attention to fit practical performance and dependable operation.