Quote Originally Posted by Eric P View Post
Also brought out a AR15 that had been shot once, and failed to eject.
swapping the bolts means extractor isn't the issue. I had a similar issue with my first AR. The fix ended up being a simple polishing of the chamber. I picked up some #0000 steel wool, and wrapped a little around the chamber brush. Chucked the cleaning rod into my cordless drill, and did about 20-30 seconds at low to mid speed. Then cleaned well to make sure there wasn't a debris left in there, and never had another issue.