I have owend this gun for about a year, I love it. It is really acurate. The trigger pull is AMAZING, virtualy no force required and only moves close to 3 mm. Balls fly straight and far. I mean really far. And the balls dont get all screwy and start doign loop d loops at distance like other guns I have shot.
Not much. The company went out of buisness so parts can be hard to get, but this gun is fully pneumatic and has no moving parts on the inside so you dont have to worry about replacing anything but o-rings.
So I would say its the most acurate gun, out of the box I have ever shot, it has a upgrade barrrel I have heard good things about but not used so I cant say for sure. REcomend buying if you can get one. I payed 280 for mine on ebay and it was well worth the money.