XTech Tactical(R) Magazine Conversion Kit is designed for compatible HK VP9SK 10-round magazines. The kit converts a compatible 10-round magazine to a 12-round configuration and features a black finish. This configuration is supplied without a magazine spring and functions as a magazine accessory rather than a complete magazine.Key Features Designed for compatible HK VP9SK magazines Converts a 10-round magazine to 12-round capacity Provides a +2 capacity increase Magazine conversion kit configuration Magazine spring not included Black finishXTech Tactical(R) manufactures magazines and firearm accessories with an emphasis on durability reliability and functional design. The company develops components for a variety of popular firearm platforms and uses purpose-selected materials and manufacturing processes. XTech Tactical products are designed and manufactured with attention to consistent fit and dependable operation.