Short stroking question

[Swstock]

The nick is normal if I'm understanding you correctly, but maybe post a picture to be sure. If the charging handle is fitting weird that can definitely cause issues. At this point I would suspect some kind of compatibility issue is to blame, which is something you can run into with non milspec parts if you're mixing brands.

The phosphate can definitely cause you to have a little break in period, but it shouldn't be to the point that it's short stroking. If the rifle is so undergassed that a little phosphate stickiness can shut it down then that's too far on the edge for my taste. Especially if it was lubricated.

I think that small mark is normal to. I really suspect that something got in it and came out when I took it back apart.

Nothing is mixed and matched anymore. That was why i took it apart to begin with.

[Todd.K]

Mixed parts from reputable quality sources are not a concern. At all.

Did you check the brass for any dropped primers?

[Swstock]

Mixed parts from reputable quality sources are not a concern. At all.

Did you check the brass for any dropped primers?

I didn't. It was happening in a class so I had to swap uppers and keep it moving.