I REALLY NEED HELP

[paint baller Nick]

I HAVE A REBEL BASIC AND I NEED TO KNOW IF ANY OF YOU GUYS HAVE ANY IDEA AS TO WHAT BARRELS WORK THE BEST FOR THIS GUN OR IF YOU KNOW ANY GOOD UPGRADES LIKE A EXPANSION CHAMBER ETC>

[PDL_Drummer]

As far as the expansion chamber goes, from what I've read ACI makes one of the best ones for the least cash.
~Ben

[elTwitcho]

Well, there is no "best barrel". What you need to do, is find out what size the paint that you usually use is, then buy a barrel that matches that size. Not all paintballs are the same size (though they say .68 caliber, it almost never is), so companies have made barrels to match certain types of paint. Find a barrel that matches your paint, and you'll be a happy man indeed :)