They have a 'beyond MOA' guarantee, in that, they want you to be satisfied. That's great and all, but I waited three months for the rifle, and if I have to send it back, it'll take another 5-8 weeks to get it back. And they don't shoot it to confirm that anything they did fixed anything, they just check for things that might be out of spec, or replace things, and send it back for you to see if they actually fixed anything. If they didn't, they are happy to work on it again, and so forth. Like I said, that's great and all, but it should just shoot right to begin with.
As I said, I'm reserving judgement until I shoot it again in stock form, although I highly doubt the KRG Bravo chassis negatively affected accuracy. And if it still doesn't shoot, my gunsmith can re-barrel it in 2 weeks and have me back in business, or I can drive it right back to him to fix anything.
I put a whole lot more faith in Proof Research barrels, and a gunsmith with a proven track record than I do Rock Creek barrels and, whoever might be knocking out factory rifle builds in Glen's shop.