Phantom (stock and direct feed) with either a 4oz tank or a 9oz. Nothing else (it doesn't need it).
Tippmann Pro/Carbine (stock, needs nothing)
I've used normal Blaze and Midnight .68 Caliber balls with this barrel.
Very accurate. Looks really sharp. Light.
Very long (18")
I bought this barrel because I'm making a scenario sniper-type marker out of my phantom...and I wanted something a bit longer than the stock varieties. First off this barrel is every bit as accurate as the stock CCI Phantom ones...it just slightly reduces your fps velocity. The barrel looks amazing, with its muzzle break looking a lot like a silencer...I got mine coloured the acid green to match my marker, and all for $55 USD. A great deal if you ask me.
Excellent for the scenario type player, but stick with your stock barrel if you're into the stock and pump tourny's.