My CF 6.5x47L barrel for my AX has been incredible. I also have a CF on my AR and it has also been extremely good. Both were prefits, and both were perfect. Based on the two barrels I’ve had from them, I’d highly recommend them. I remember a few years ago when they first started to get really popular, there were a lot of quality complaints and problems I heard about (particularly with the gas gun prefits), but from what I can tell they’ve really stepped up and seem to be giving out consistent top quality blanks and prefits on par with the likes of Bartlein, Kreiger, and other experienced barrel makers.