2k3 Mini Black Magic
STO Kaner Barrel kit
Nexus Upgrade kit
There really is no reccomended paintballs since it is a kit not a single bore barrel, this means you can get a perfect paint to barrel match with any paintball
I was very fortunate to get my hands on the new STO Kaner kit at the NPPL Tampa event and let me tell you its one of the best things I bought for $150. It has many strengths with only a few key weaknesses.
The new improved version of the Kaner is down right awsome. It has the honing of the Stiffi with out the squeegee problems. Although a pull thru is recommend if you don't have one the best thing to do is use a battle swab after taking each insert apart, then swab. The porting one of the best I have seen on any barrel it literally takes away all the bark, with no efficiency problems if I can add. As for bore sizes it comes with all the ones you will ever use, such as: .682 .684 .697 .689 .691 Although most people will end up only using the .689 bore because 1/3 of all paintballs come in this size. Now if you have a delrin bolt you will not here any thing else besides the bolt & hammer of the gun, it literally eliminates all the bark of any gun. The new thing with the STO is that the inserts are a bit longer which means that if you are unscrewing it it will be much easier because it is in front of the pneumatics instead of on them.
The only down side with the barrel kit is the cost, although I was fortunate enough to get it for $150 they usually go for $200. The other downside is that they are so hard to find and they only come in autococker threads.
The advantages outweigh the risk so this is a must have.