Sterling - the consummate pump-marker
Various rental pumps - generally crap.
ICD Panther w/ vertical CO2, wooden grip, and Smart Parts spiral drilled barrel
Tippmann SL-68II w/ 18" muzzlebrake barrel (of unknown origin) and 30mm dot scope
An aftermarket barrel can help these 'guns, but they are pretty accurate with the stock barrel. A dot sight of some kind IS a vast improvement over the fixed sights on the 'gun, though.
These things are INDESTRUCTABLE!! With the solid cast aluminum body housing well-machined, easily maintained "guts", this 'gun will last for years (I've played with mine in all sorts of games for about 12 years!).
The accuracy out of the box is hard to beat.
Can "auto-trigger" to get you out of a tight spot.
Kind of loud in its stock configuration and ALWAYS has the characteristic Tippmann "ping" when fired.
The fixed sights are no good beyond about 40 feet since the front blade twists so easily.
Requires a hopper adapter.
This is definitely a gun for the true sport of paintball. It's use requires some patience, stealth, and nerves if up against "spray-and-pray" players with 9000 round per second auto-'guns. BUT... there is no better feeling than nailing an opponent dead center with 1 ball as he lays down a 1/2 case trying to find you.
I lost 2 games to my own SL-II the other day while using my Panther semi-auto! :(