I got one on a trade and took it out just to function test it before selling. With the 5/10 PMAG and 10 rnd asc mag, it fed and ejected flawlessly. I only put 20 rounds of federal 7.62 through it though. It was fairly soft shooting/didn’t seem over gassed.
Fit and finish is pretty excellent as far as I’m concerned. One issue is that the dust cover they use is cheap flimsy plastic and when you open the upper/lower to remove the bolt, it opens (as it should but when you go to collapse the upper/lower, the dust cover binds on the lower. It opens almost parallel with the side of the receiver if that makes sense. The BCG functions well, but the finish left a little to be desired (some wear marks on the top, on either side of the gas key) and the retaining pin system they use, while nice, is a pain to remove IMO.
It’s pretty light for a 308 battle rifle. Didn’t weigh it but would guess around 8lbs stock. I like the ambi controls and it’s a plus that it comes with a decent charging handle.
I didn’t put sights on as, again I was just function testing so I cannot speak to accuracy.
For comparison I built a stag 10 a while back. I still prefer the stag 10, but the mk7 is way better than anything I’ve seen from NEA/BCL before.
Hope that helps!