From the outside it was terrible in condition as if it had been left in the sun for years and the battery was rusted it didn't even work

Well I have it in my hands for about a week, it has its positives and negatives, among its positives that are not mentioned anywhere is that you do not need to fill the water gun from above, it has an electric pump with a button that fills the water gun just by dipping the barrel in water, the range and power of it is enough for games but it does not reach the 12 meters it says, 5-6 are enough I believe, good material quality as it shows and good battery autonomy.
As for its negatives (which I fortunately spotted in time), it does not have proper waterproofing in the battery area, so if you immerse it in water I believe you will have a problem, which is unjustifiable for a water game, so its price is a bit expensive since you cannot be completely carefree