Hello Forum,
I am having some issues with a newish ar-15. I recently gave it it’s first cleaning after about 500-600 rounds. Took it to the range today expecting it to run great, hoping that the “break in” phase was over. The results were a bit disappointing. I experience some jams, at least one per mag. Often more. Most of the time i experience your typical jam, sometimes it does not cycle correctly.
In attempting to diagnose problems with A) the ammo, or B) the magazine, I had mixed results… Today I had four different types of ammo, and 6 pmags, 3x 30’s, 3x 10’s. What I found was ammo “A” would jam every shot when used in mag “A” but run well in mag “B” different combinations of this scenario kept arising.
Another malfunction that kept happening, consistently no matter what ammo or mag was the bolt is closing after final shot.
These issues, and have lead me to think that is neither a magazine or ammo issue. I am pretty new to the platform so I don't know where to look next… BCG? Problem with the lower?
Any help of advice would be great. Thanks