I am on my 2nd barrel from them. The first was a 243 AI for my LRP, it shoots great and had no complaints.My newest one,a 223 AI, won't chamber from the mag at all and and the chamber itself is a little rough leaving rings on the brass. I emailed them over a week ago for any recommendations and have not heard back from them yet. I got the barrel quicker than their estimate and am very happy with the way it shoots and looks,just hoping for a little help from them.