Heckler & Koch is the world's second-largest manufacturer of handguns, assault rifles, submachine guns, machine guns and grenade launchers. Their UK HQ is an anonymous unit on an industrial park off Lenton Lane, NG7. It is responsible for selling guns around the world. Half a million people are killed by small arms each year, three quarters of whom are civilians. Literally millions of Heckler & Koch small arms are in use in around 90 countries.