I cleaned my Bushy M4 the other day and when I was finished I chambered a round. A few days later, a friend of mine wanted to look at something on my rifle. So I pulled it out and kicked the chambered round out and handed him the rifle. He said, "no, I want to see that round." So I gave it to him. He goes, "yep, it's doing the same thing to yours too." I looked at the round and noticed that the primer is dimpled. I reinserted the mag and chambered another round and then pulled it out and looked at it. Same thing...It doesn't look like it's enough to fire the round off, but what if???? Anyone else have this happen? Should I be concerned?