The Heckler & Koch MP7A1 is a weapon seen briefly in Underworld: Evolution, wielded by the Cleaners. It is a German submachine gun.
Underworld: Evolution[]
Near the end of the film, Selene grabs a H&K MP7A1 off of the body of a Cleaner, Levin, who was in the process of morphing into a Werewolf. She then uses it to fire on the remaining two Werewolves in the prison. After Michael Corvin intervenes to kill one of the Werewolves, Selene uses the firearm on the other and then turns the weapon on its owner and guns him down at point-blank range.