Smart Parts Epiphany
68ci 4500psi pure energy tank
Halo B with rip drive
Smart Parts Ion
Anything as long as you have good bore match
Get the boremaster
Nothing besides price perhaps
This is one of the best barrels on the market for smart parts. The interchangeable inserts allow you to match your paint to bore perfectly, giving you an incredibly accurate shot every time. You can also change the tips to the all american, jr freak, tactical, etc.
All in all, the money spent for this thing will save you a load of time cleaning the barrel!
Anybody who wants to shoot accurately primarily tournament players