My pleasure entirely, of course.
FWIW I think a 14.5 NEA barrel would be an Afghan-grade laser beam. With a 1-4 or 1-6 I think it would be absolutely deadly for a very, very long way.
I have never shot the 12.5 past 70m...but it's bolt gun accurate at that range. Using AE Tac I think I'm running up against the limits of the ammo, accuracy wise.
I have some Mk 262 mod 1 that I was actually given by a good friend...really want to dial the gun in a bit and then check that out at 1/2/3/4/500m...but at the same time I really don't want to give up that precious stuff. I need to sort out a decent intermediate range optic and then get to work off a rest to see what it will do. I just treat it like a carbine which is almost a waste of the barrel's accuracy, although it makes a perfectly good carbine, of course.
Anyway I hate to paint in broad strokes because the devil is in the details and I'm not here to pretend that NEA's QC has always been great, so I don't like to give unqualified statements about the entire system. They've gotten better at building guns and more selective about their components, at least if my rack-grade 12.5 is any guide. Whether that will forever translate in to a higher state of QC is tough to say; I mean it's not like Colt or S&W haven't had phases of great Q and phases of poor, so I imagine some degree of fluctuation will always exist.
But I will say this: if I could only have NEA barrels, ever, for the rest of my life, I would be absolutely 100% fine with that. It's accurate as hell and totally idiot-proof as far as corrosion etc. I really, really like the barrel.
In some ways it's sort of a strange discussion, I guess, because beyond saying "man, that's an accurate barrel" what can I really say? The rest of the gun is an AR and unless something breaks, functionally they're all about the same to me. I'm not really a connoisseur of guns, when it comes right down to it. I want stuff that goes bang when I expect it to and makes holes in unsurprising locations, and any gun that does that is pretty much fine by me. So I really can't complain about the 12.5 at all.