The H&K USP Pistol is a semi-automatic, double action handgun made by Austria that is chambered for the 9x19mm Parabellum round. It is known for being the first popular pistol using high-impact polymers in its design, a title that really belongs to the H&K VP70. In every video game where the original H&K appears, it carries 18 rounds. The H&K is known for being both extremely simple (with a mere 30 parts) and extremely reliable.
The H&K is also the basis for a wide variety of handguns, all of which are given the name Heckler & Koch followed by a numerical designation. All of these handguns are generally similar in appearance, some of them have the stock some others don´t, the stock gives it the ability to become an automatic gun which makes it extremely useful in some cases.