From member Large Unit in Tippmann Forums.
!!!!!Choosing a barrel!!!!!!
We are all sick of this question being asked, hopefully with this guide those of you looking for a new barrel won't have to ask the dreaded question.
Their are single barrels and Barrel Kits, the barrel kits have different bore sizes and will match to your paint giving you better accuracy, but at a higher price. If you cant choose still just use choose a random one because all the listed are great.
Custom Products 2-piece
Smart Parts freak
Smart Parts barrels
Custom Products 1-piece
The Tippmann flatline is so unique it deserves its own explanation. The barrel is curved which creates a backspin giving you an advertised 100 feet extra range and a flat trajectory (no other barrel does this!!!) If your into long balling in the woods this is for you.
:::Barrel accuracy factors:::
You want a barrel that is very smooth on the inside and micro honed so their are no bumps on the inside.
Helps just as much as a new barrel, you want perfectly round paint without any dimples.
-Paint to barrel match-
Paint to barrel match means a lot for both accuracy and air efficiency. You want paint that wont roll down your barrel if you drop it in, but that will come out with a blow of your breath.
Longer barrels: Despite what you hear from some people, longer barrels do nothing but hurt, 8"-16" are the best lengths and all perform the same.
Rifled barrels: Every year or so a company comes out with a rifled barrel and everyone makes a big deal of it, they do nothing to help and if they did work your paintballs would just curve to the side.
!!!Have fun and good luck!!!