I started with a 10.5" BA barrel in 5.56 from their Modern line. I put a few thousand rounds through it, and never had an issue with the barrel. I'm running red dots so can't comment on accuracy, except to say that the one time I was trying to shoot precisely at 50 yards to zero it, it shot right at about MOA. I only shot it out to about 200 on steel, but it never let me down. What surprised me was how well it shot when it got hot. It never did anything that had me scratching my head.

Since then, I've replaced the 10.5 with an 11.3" Hanson barrel. Same deal. Good barrel, but I wish I had started out with the 11.3 in the first place. The Hanson profile is the way to go and the pinned gas block just makes life a bit easier. It balances really well and points very quickly. When I first got it, I was overshooting my transitions.