Highlander: The Animated Series
The Sound of Madness
S1 E5:
The Dundees are attacked by bandits with a terrible weapon used in a time before the Great Catastrophe. Ramirez learns it is a machine gun when he performs a magic called surgery upon a wounded Dundee. Quentin has gone with the Dundees in search of the bandits and the weapon. They find the bandits held up aboard the remains of an ancient aircraft carrier.