You can have HPA, you can have a hopper, and you can have extra pods. Last year (from the pics I saw) there were MVP's, CCM's, Snipers, and maybe a Phantom. Then there are always the autocockers with a pump kit thrown on.
The main thing is that you rock a pump gun or a 12g powered pistol (TiPX, Tib8/9.x). Or even a PGP.