What's up guy? have a question about my new ar. I traded for it like 6 months ago and never got around to shooting it. Finally got it out today and the rifle won't cycle. When firing the bolt doesn't even come back. When I did got it it had a low pro gas block and I had a gun smith put on a railed high rise gas block. Is the gas tube just unaligned? Best way to check it? It's an Anderson am15