I shot the AR for the first time.............
The fail was strong. I had a lot of light primer strikes and feeding problems. I'll be giving it to an AR armorer to take a look at it.
I was talking to another armorer at the range today and he said it was most likely the headspace, firing pin, or something else with the bolt. It was a complete upper so it's most likely not my fault. This other guy is gonna take a look at it for free(it's good to know people) and we'll see what he says.