Well, because I had no sights on the gun at all, and that the break in procedure (shoot 5 then clean x4) is eye wateringly boring, I only put 20 rounds through it. BUT everything ran exactly as it should. I realize this doesn't sound exciting as it's supposed to run properly, but I've never built an upper before so for the TNA brand gas block/tube, NEA barrel, Noveske upper, Stag Arms BCG, and Spike's T2 buffer that's already on my pre-existing lower to all be working in synergy makes me a very happy camper.
On an assembly note, I put my upper together with the help of a co-worker as he'd previously done one himself. I had a NEA barrel on mine, when he built his he used a Rainier Arms match barrel. On my NEA barrel the pin in the receiver extension was dead straight lined up with the gas port on the barrel. On his significantly more expensive barrel this was not the case and not only made installation a bit more challenging but also means that his gas block is forever installed on an angle where mine is nice and straight. Not a big deal, but NEA catches a lot of crap on here for their quality and in the case of their barrels I have no complaints at all.
