For over half a century, Heckler & Koch has been a leading designer and manufacturer of small arms and light weapons for law enforcement, military and commercial markets worldwide. Its reputation for quality, innovation, and safety make Heckler & Koch a gloablly recognized leader in the development of technologically advanced firearms and firearm related products. These genuine HK factory magazine is the perfect compliment for you HK firearm. Factory magazines are designed to exacting specifications and tight tolerances. This particular magazine features a polymer body, steel spring, polymer follower and polymer floorplate.