a portable anti-aircraft system. fires 30mm rounds. the user will be very slow, prone speed when walking. large hit box to take damage. weighs 345 kilograms for those who want to watch the animation/video check here Hellsing - 30mm harkonnen II if you dont want to watch video, below are some clips, but i dont think it gets the awesomeness through. at least the song in the background for the video is from system of a down.. so its not too bad (i hate AMV). If interested, this other longer video is more detailed. Ceras Victoria 30mm Harkonnen II it starts at 3:23.