Evil Pipe Barrel Kit
Barrel is a two part barrel the back is sized so you can get a better fit for the paintball. It came in a 3 or 5 backs kit and notably stores in a black pipe.
B.T. Apex Barrel
This barrel is in a class of its own as you can adjust range and back spin on the paintball to cause it to turn after a set distance. It also is the furthest shooting barrel on the market shooting standard paintballs. Created by Ben Tippmann after leaving Tippmann Sports and is said to have taken part in the creation of the Flatline barrel for Tippmann.
Tippmann Flatline Barrel
The Flatline is a arched barrel that puts a backspin on the paintball and different kits to fit different markers. Until the release of the Apex barrel it was the longest shooting barrel on the market. Commonly seen on the Tippmann 98.