X7 help

by Andrew
(America)

I'm 12 and I literally just started playing painball 4 weaks ago, I also just got a tippmann X7 for Christmas and i would like it to be a good sniper marker but the x7 even with the flatline barrel isn't the most accurate marker, I'm using Co2 and I have heard that switching to nitrogen makes it more accurate, is that true? Also is there and upgrades anyone can suggest that would make it more accurate, or just any upgrades at all that you would suggest.

I allready have:

Flatline barrel

Red dot laser sight

Electronic E-grip (or whatever its called)

And im going to get the remote line for the tank



P.S my keyboard is really screwed up so if im missing any letters thats why