My neighbor actually just got one. He should be at OCD wars on saturday.
The performance is decent. RoF is good even with the crappy stock battery (large; 1500MaH...)
External durability seems to be somewhat lacking coming from a high-end standpoint.
The breakdown is kind of tedious, but not anywhere near as tedious as the TM M14 design.
The accuracy is pretty crappy. Now, we cleaned out the barrel and waxed it last night (and threw in a bucking that is either a TM or SRC). The barrel was extremely dirty. There was so much crap in it! It literally took like 10 minutes to clean it decently. We couldn't test the accuracy last night b/c it was dark.
It's a decent gun. But I'd definately recommend getting sniper2525's gun wholeheartedly. The weak points of a CA are the piston and the wiring, but with a new piston, M120, and new wiring, it should be an excellent field gun.