it was built out of garage parts, I think the idea was the guy was going to knock out an air traffic control with it. It had one of those cheap pizzia pans with the holes in it as the "dish" on the front of the weapon and it could I think be held with 2 hands like a heavy machine gun would and the power systems driving it were contained in a van. I can't remember what the movie was..does anyone else remember it? I believe it's years old, like the 90's