I've got one, and also have no desire for one of the shortened versions.
In my humble opinion, unless it will solely be used in long range competition, the NM version is a complete waste of money. All the excess weight in the stock turns a rifle with nice balance (but not as nice as an M1) and heft into what feels not overly different from my 7.62 AR with a 12" quad rail and 20" medium weight barrel. That is not a compliment.
I get 1 1/2" groups with NM irons with the load I use for my 7.62mm AR, so I didn't even work up a handload for it. If I scoped it, the load may give me 3/4" to 1", but it's not a precision rifle....it's a battle rifle so that's the way it's gonna stay.
A fiberglass stock will be more stable in different humidity and rain conditions, but again in my opinion, all M1As should have Walnut stocks.
The barrels are chambered to true 7.62X51 NATO specs. I think they list it as they do to show people that it's safe to fire 308 Winchester ammo in them.
If you want one, I say get it. I've wanted one for a long time, but not necessarily a new one without mil-spec parts. I finally came across one a few months ago in a non local guns shop while just wasting time. Lucky me.
