MP5
The MP5 is a 9mm submachine gun of German design, developed in the 1960s by a group of engineers from the West German arms manufacturer Heckler & Koch GmbH (HK). The company, motivated by the success of the Heckler & Koch G3 rifle developed a group of small arms consisting of four types of firearms (all based on the G3 design layout), where the first type was chambered in 7.62 x 51 mm NATO, the second – using the 7.62 x 39 mm M43 round, third – the intermediate 5.56 x 45 mm NATO caliber and the fourth type – chambering the 9 x 19 mm Parabellum pistol cartridge. The MP5 (short for Maschinenpistole 5) was created within the fourth group of firearms, initially known as the HK54.
The weapon made an appearance in Grand Theft Auto: Vice City and Grand Theft Auto: San Andreas.