There's a big difference between "meeting milspec", "Exceeding milspec". In the eyes of the US MIL, below grade or above grade is still not on the line. It's a rule, not a guideline.
I believe the Norc is neither on all counts. Does it mean it won't go bang and put a hole in what you're pointing at? Nope. Will the finish wear off and the parts break down sooner? Probably. But if you don't shoot enough to see it, or care how it looks then you'll likely not care. Most people around here don't shoot enough to even wear out a Norc. Personally I don't care much for them. i know a lot of people that do shoot them though.. and even a few that shoot very well with them. One thing I do like about them is that they have got a sh!t load of people into the AR game that couldn't afford to before. And how can that be a bad thing?
If it goes bang and does what you want, then it is doing what it's supposed to.