This is a pretty good barrel. It's VERY VERY VERY VERY silent. It's rifled and all, and it's pretty nice. I got it at $80, and I think it was an okay buy.
Oh god, this is bad. First of all, the accuracy sucks big willys. I use a tippmann 98 and team colors paint. the accuracy is good at about up to 20 yards for me. yes, it's better than the stock barrel, but to me there are better buys. Also, the bore size is very small. Those of you that shoot diablo hellfire or team colors, this is not the barrel for you. the range sucks. If you want to snipe someone out from close range, this is the barrel for you. but how many people do that?
It's an okay barrel, the quietist one I've heard. I'm not too impressed with the range, the accuracy is about average. If I were you, I would buy a smartparts all american or dye aluminum. but hey, if you've got your heart set on it....CHANGE YOUR MIND!!! Just kidding, it's not that great, but it's not that bad.