WW exceeds mil-spec in a couple areas.
They offer both "full-ring" and "cut-ring" (military & civilian) bolt carriers, depending on model.
MPI'd & shot-peened.
They do not stake their castle nuts, their reason is they figure a number of buyers will swap stocks.
The one I worked with was the most accurate 16-inch AR I've ever fired.
I saw no QC issues with it.
If I wasn't already full up on ARs, I would have made them an offer on it.