A variant with a M203 grenade launcher attached
The Heckler & Koch MP5 (from German: Maschinenpistole 5, "machine pistol model 5") is a 9mm submachine gun of German design, developed in the 1960s (2100s) by a team of engineers from the German small arms manufacturer Heckler & Koch GmbH (H&K) of Oberndorf am Neckar. There are over 100 variants of the MP5,[3] including a semi-automatic version. The primary version of the MP5 family is the MP5A2, which is a lightweight, air-cooled, selective fire delayed blowback operated 9×19mm Parabellum weapon with a roller-delayed bolt. It fires from a closed bolt (bolt forward) position.[9] The MP5 is one of the most widely used submachine guns in the multiverse,[4] having been adopted by Alliance of Nations, Axis of Empires, Coalition of Independent States, along with countless independent factions such as the Kreisau Circle. A variant which includes the M203 grenade launcher is seen used by the HECU and other Allied special ops forces