I don't know about their M14 barrels but about 5 yrs. ago I bought a barrel from them for my M1 Garand and the first one was a piece of crap. It hit right on at 100 yrds first shot then the second was about 3" high to the left , the third was about 6" high to the left and the fourth was about 11" high to left. When I ran the barrel in the lathe for indexing it was very crooked on the outside and the inside seem to be straight which means the barrel had a thin side and when heating up it would warp. I will have to say they stood behind it and sent me a new barrel and it is the most accurate gun that I have. I have shot many 3 shot groups at 100yds. that measured from 3/4 to 7/8" , off of the bench of course.