I hate how G&G makes nice rifles but do not take care of the internals properly. Now im even more hesitant on buying the R5. Unfortunatly i still love the R5 and will continue supporting G&G and plan on taking your advice of opening up the gearbox before taking it to a game or before putting a hi-cap through it. I'll make sure to get a version 3.
N Sask R Infantry Reservist
Vltor + 553+Surefire = win