I am exceptionally picky. I found three flaws in the lower that I didn't like. That said, I believe the machining and design is first rate. ATRS's customer service makes my lower nearly worth the $500 even with the blemishes, which most people could never see.
I believe that the media blasting only causes cosmetic issues in this instance, as the anodizing is beautiful in person. Yes it is "patchy" to me, and yes my standards are very high but I doubt very much that there is any further quality concerns.
The other two issues are also cosmetic and I doubt that it would effect the function or lifespan of the lower. Other than bother me enough to consider selling it

. I will finish the rifle before I make up my mind on selling it...
Rick has been one of the best people to deal with, though I never brought these concerns to his attention. This thread is the first time that I've mentioned it.
You'll notice though, there are plenty of people and dealers on CGN willing to overlook quality issues and berate anyone willing to speak up about them. I think that speaks volumes about the quality of their business practice. I personally believe Rick runs a first rate shop based off my dealings with him.
As I mentioned earlier, media blasting is an art and not just anyone can do a good job of it, and you have to look very close to notice it, unless you're very familiar with media blasting.
I wouldn't hesitate to recommend something from ATRS to anyone in the future. My complaints are the nick-picks of a perfectionist. They are valid complaints in my opinion, but shouldn't be used as a basis to refuse to purchase from ATRS. I will still be buying an upper from them and a number of other parts.