This is a factory blued steel 13 round magazine manufactured by Heckler & Koch for the VP40 and P30. This magazine is intended to hold .40 Smith & Wesson caliber ammunition.
Heckler & Koch is a German defense manufacturing company that manufactures handguns, military rifles, submachine guns, and grenade launchers. HK is also the maker of premier brand firearms for the sporting and commercial markets. Its reputation for quality, innovation, and safety make Heckler & Koch a recognized leader in the development of technologically advanced products.
The VP40 is the .40 S&W model of the acclaimed VP pistol line first introduced in 2014 with the VP9 (9 mm). VP40 pistols use proven HK P30 steel magazines; either 13-round or reduced, 10-round capacity magazines.
Despite their small size, P30 subcompacts have excellent weight and balance making them naturally pointable, easy to control, and accurate to shoot.