The Heckler & Koch MP5 (German: Maschinenpistole 5) is a submachine gun that fires 9x19mm Parabellum cartridges, developed in the 1960s by Heckler & Koch.
To unlock the MP5, you must complete the following steps:\n\n Reach rank 16 to unlock the Lachmann-762 Battle Rifle. Reach weapon level 13 with the Lachmann-762 to unlock the Lachmann-556 Assault Rifle. Reach weapon level 12 with the Lachmann-556 to unlock the MP5 (Lachmann Sub).