I own one of these as well. Definitely recommend it. It's extremely comfortable
Stock performance is great, but I have upgraded almost everything inside, aside from a few proprietary parts, for a higher RPS setup. It shoots great.
Does anyone have an experience upgrading this gun's cylinder head? I bought a V6 Modify head and I can tell you that it is definitely not compatible with it. The nozzle sits higher than the G&G stock head. And it isn't a V2/3 either. :S