Kelly's Heroes (1970) - Oddball Tank Enhancements

Oh ya, I mean, like, you see all the tanks we come up against are bigger and better than ours. So that all we can hope to do is like, scare them away, you know. This gun is an ordinary 76mm, but we add this piece of pipe onto it and the krauts think, like, uh, "maybe it's a 90mm?" We got our own ammunition, it's filled with paint. When we fire it, it makes pretty pictures. Scares the hell out of people.