The Heckler & Koch USP, or Universale Selbstladepistole (meaning universal self-loading pistol), is the semi-automatic sidearm of choice for the Belkan military and special forces units throughout the Strangereal World. Though fairly well-known as the sidearm of the Belkan Bundeswehr, the weapon gained its popularity mostly from its use by the Osean Green Berets during the Belkan War and later conflicts.

A USP45 with its .45 ACP rounds.

Like the HK416, HK417, and MP5, the USP was produced by an Ustian-based subsidiary company of the famous Belkan arms manufacturer Heckler & Koch, which marketed its product on the international market. This allowed the weapon to be acquired by many different operators.

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