Excellent work! I'm guessing with that many parts, you've managed to do the individual gun barrels. It looks awesome! I look forward to seeing the finished product. I hope you'll be releasing it. At 25cm it would fit right in with my small army of mechwarrior mechs. From what I remember of the game, I'd guess a real-life one would be about 8-10 meters tall (don't hold me to that though).
If you find yourself in desperate need of a printer, PM me. I'd be happy to run one or two off on the old color laser and snail-mail it to you.