I have a upper from Bushmaster and this has been the second time that I have had a “tweaked” bolt cam pin....
The first one I had I didn’t think anything of it. I had fired several boxes of ammo through the rifle and I wrote it off to a cheap factory pin.
But this weekend I fired only 5 shots through it and after the 5th the bolt wouldn’t fully seat forward. I split the rifle to again find another bent pin.
What could I have going on here? It shouldn’t be a dirty rifle because I cleaned everything really good prior to these last 5 rounds....