if you have a G&P then you will be able to fit the 9.6V 1700 nunchuck/butterfly no problem, with no mods required. as far as the V Batterys go i have not tried them, i have heard they are a tight fit. I would go with the nunchuck just to be safe.
As far as the site goes they show USD prices, I would go with something a little more local that is for airsoft.
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