I just got my AR-15 back and it had been sitting for a few months so I wanted to clean and lube it. I did a basic feild strip cleaned it up and put it back together. Took it outside and on the first shot the extractor held on to the empty case and jammed up the fresh round that was trying to come up. I got the fresh round out by dropping the magbut I cannot get the empty out and I cannot open the upper to pull out the firing assembly ..what did I do and how do I fix this..like I said Im new to ar's and I've never had this issue before. heres a pic sorry its a crappy cell phn pic.
