OP, thanks for the information. I have not had anything anodized in over a year and did not realize NFA was longer doing this. They always did a fantastic job for a very reasonable cost. But if Vegas Metal Finishing is now taking this work, then that's good too. When I used the NFA anodizing over a year ago, turn around was usually around a month. For the great price and quality, that was fine. I imagine they waited to put together a full batch, then they anodized them and shipped them out.
Like others have mentioned, the way to get factory results was to have an 80% lower engraved with the serial number and info you want, then mill/router the engraved 80% yourself. Then, send the finished lower out to be anodized. You get back your engraved lower looking like a factory item. New Frontier Armory did a fantastic job. Back in the salad days, you could order an 80% from suppliers like Right to Bear engraved per your instructions for something like a $20 or $30 upcharge. RTB still has the service, it's just gotten more costly like everything else has. Oh well, you can't go back in time, so it is what it is. I still think it is a good deal if that is what you want. Get it engraved, mill it, anodize it, and you're in business.