Since I'm not well versed on AR parts other than lowers and such, is there anything I need to check for on this upper? I know there is no BCG- that would be the first thing I would have to check to make sure its legit. Since there isn't one, is the rest basically good to go?
Check the feed ramps and make sure that they arent worn to shite and back. Check the barrel to make sure that the grooves still look good and isnt gouged or smooth. Thats basically it since there is no BCG.
Hmmm. I started asking a few questions and got on the topic of the barrel. I thought the whole setup was new and it was a Colt barrel that came with the upper. Turns out it is an older barrel that they have used before, a Rainer. He said there are no marks on it, and if a 556 SS barrel with 1/7 twist. Should I reconsider?