I highly recommend paint made by PMI and RPS. El Tigre, All star, Marbelizer. Also Diablo Midnight paintballs work great. AVOID PROBALL AND POINT BLANK!!!!
This product is great because it has great distance and accuracy-- If you use the right paint. Cheap paint will only break in the barrel and screw up your game. Shoots further than any other barrel. Accuracy is exceptional.
Somewhat loud and front heavy, somewhat expensive, but as long as you have a job, you're fine.
This product is great, and ANY tippmann a-5 owner should own this barrel as well as a lapco bigshot-- they are easily the best barrels and they are all you need for paintball.