A WWII German flamethrower. Flamethrowers were used for the first time by the Germans in WWI, and they were very successful- mainly because of their psychological effect. The equipment itself was heavy, difficult to handle , had a limited range, and was quite dangerous to the soldier using it. With my flamethrower I've tried hard to make it look like the real thing.
A shot of the rear, showing the tanks. One would contain a flammable liquid, the other a propellant- usually nitrogen.
The black piece on the right of the photo above can only be found in some Batman sets.