Contact the maker to see if it is possible and what it will cost.
Usually not. But you must cock it between each shot.
No. Wrong size.
ni-cd 2/3aa 350mah 8.4v
Nitro has a few advantages over Spring. You can leave it cocked for a long period of time and not worry that it will loose it 's power. You have a more even release force with nitro ( A spring wobbles). There is not a spring to break or get soft over time. The power will always be consistent.
No, it is a cheap spring gun and could not be used in an airsoft match
in general 180 $ is the minimum for a reliable rifle.
soft clean cloth
Try oiling of the gearbox.
Not if its not designed that way.
soft cloth titi
EBay for sure. They are also the cheapest in quality though, and you should take that into consideration when purchasing an airsoft gun. You will get what you pay for. A $50 spring rifle will far outlast and out-preform the $15 EBay special.