Gun Chooter
Marksman
I noticed when unloading one of my ar mags today that the top round had a slight endention in the primer from the firing pin. This is a live round so it caught my eye. My assumption was that this round had been loaded into the chamber and when the bolt stopped behind the round in the chamber, the firing pin lightly smacked the primer causing this dent. To test my theory, I put the mag back in the rifle with a fresh round in the top of the mag. The bolt was held open in the rearward position. I let the bolt drop to take the top round and chamber it. Pulled the mag and unloaded the round to inspect, and sure enough there was a slight endention in the primer. Anyone else experience this? Is this dangerous?