My one buddy has one that I think is in parts now. As far as TM compat. is concerned, I remember that some of the Tippmann parts like the stock were actually shorter than thier TM counterparts. I can vouch for the plastic mechbox as well. When he first took it apart, there was a large metal wieght over top of the mechbox where a battery would go on an AK47S to make up for the abismal lightness.
Ask Kaos about it. He got smart and decided to give the much talked about Kraken a spin.
"Void where prohibited. Prohibited where void. Void and prohibited where not allowed."