NS should be good for airguns anyway, from a recent discussion from what I make out unless you have a proper scope killer like a TX200SL or Diana 56 then most scopes are fine for sub 12. That said I'm not sure what your limits are over there (if any) so could be talking out my arse.

If it's gloss paint then it'll be anything up to mid 90's IIRC (as was the fashion)