Hmmm.....cheap MP5 to go with my cheap AK. Went with highspeed gears and turbo motor to bring my AK's ROF up, maybe I can stick an 11.1V LiPo in the MP5 and use it as a backup when I am running my PTW as an SPR. Since it was confirmed that they are in Ontario (thanks Wilson) I will be picking one up.
As for compatibility, the AK I have has deepfire bushings, SystemA shims, HurricanE gears, and a SystemA motor. The only thing that isn't TM compatible is the hopup which can be easily replaced with the prowin or king arms one and then use a standard airsoft barrel.