The factory barrels seem fairly consistent. The LRI barrel really isn't all that expensive and I figured I can use the factory for some time before I start to out shoot the barrel. Only 20 rds through it at this point so I'm going to need to see how it breaks in. Franks work was pretty good and with that and what others are seeing replacing the handguard with a Seekins may be the next move. The handguard seems to be primarily an issue when putting stress on it from a bipod. The safety wiggles a bit but doesn't overly bother me. The bolt shroud sounds more cosmetic then a functional issue but I've heard of one or two causing issues. The stock is serviceable but I'm on the fence. You definitely need to make sure its all tightened down correctly, and no I didn't. I always have better plans than execution so will try to hold off doing too much until I see how and for what I really end up using the rig. I do have a APA little bastard brake on the way as well as another brake for my suppressor. I'll be doing a baseline with all the combinations to see which I'll end up using.