hi, new to all this, my gearbox in my gun is completely buggered and i need a new one, was wondering if anyone could tell me where i would be able to get one?
Could try looking on Zero One however I am not familiar with the G&G range so I don't know what you'd need.
If you go to http://www.zerooneairsoft.com then follow these links Airsoft Shop >0 Upgrade Parts > AEG Parts > Internal Parts > Gearbox Parts > Complete Gearbox's, that's what available from there.
If you know which gearbox it is you could just do a google product search and that'd get you it.