my first impressions with NEA's 7.62x39 gen2 rifle were very good. during first trip to the range with it i have shot 400 rounds of corrosive surplus ammo without any issues. i didn't expect it to be very accurate and even less in my case of shooting standing and fairly rapid. my results were decent using red dot i was able to land all my shots on targets within few inches from point of aim on follow up shots which is good enough for me. i don't think this rifle was designed to shot moa groups and when i considered it my main goal was to have a fairly inexpensive rifle with ar15 ergonomics which can accept all ar15 related parts / accessories and be able to shot cheap ammo. time will tell if it's as reliable as my cz858.
NEA states that rifle has been treated with some type of ARC treatment against corrosion - so far after week of not cleaning it since those 400 rounds cycled i have not noticed any corrosion effects anywhere, again time will tell how good is it. my cz858 (not treated in any way) with all the cleaning and many thousands over many years of corrosive crap only shows very minor surface issues in hard to reach spots, so overall i'm not too concerned.
answers to some questions you can only find out after you buy and shoot one:
does it lock back on the last round fired? - yes, i have used xcr pistol mags and surplus ammo and didn't have any issues with this one.
does mags drop free? - yes, my xcr pistol mags had no problem with gravity.
can you load full mag on a closed bolt? - yes, again using xcr pistol mags i had no problem.
is it single point sling ready? - yes, it has two loops on each side for any type of single point sling with a hook style attachment.
does it have ambi safety / mag / bolt release - no, but it uses standard ar15 parts and all can be replaced with aftermarket ones if desired.
can i replace and use raptor 5.56 charging handle? - yes, this rifle is not AR10 variant and no need to wait for 7.62 version.
what comes in the box? - rifle, lifetime warranty certificate and four spent corrosive casings of test rounds fired by NEA. that's it. iron sights, sling or mags are NOT included.
other AR15 type ergo rifles in 7.62x39 to consider: Armalite - a bit more expensive and has an issue with front sight rail being a tad lower than back rail, so must buy iron sights which can compensate for this gap, doesn't have sling mounting options and no full rail system; RobArms XCR - heavy, expensive and not part of AR15 family, big bonus to some shooters: it is non-restricted. PWS - expensive.