I dont like CA. For some reason you can somtimes get a good one or a bad one. There quality control blows chunks. Mine is ok so long as a use marui mags, but CA mags are just crap I guess. CA gearbox is not that much better than a marui I guess I hear to many stories about how there gear box whent with a m120 spring and a 9.6 battery. Its also just to dang loud in my opinion like something just is not right.
I went and built my own gun, and in my opinion thats the only way to do it. people may not want to drop that much cash. However, in the long run thats the cheapest way to do it. Also your gun would be tight, and may even retain its price value better. I droped $1200 but no one has a gun like mine. Your gun would be much cheaper than mine, it would just take more time. Only thing Mauri on it is the retractable stock and gearbox. It started as a Mauri m733 Commando, and ended as a second gun. Thats one of the reasons it would be cheaper to just go and build your own. Dont start with an already built gun. I need to go get a camra to get some pics to post.