Carrier wear in upper

This is a new factory 11.5 upper, which has been great. It has less than 400 rounds through it, about half suppressed. I have been using a suppressed bolt carrier group exclusively, and noticed in this upper and in a Zev rifle wear that seems excessive to me. I would appreciate your thoughts. In the mean time, I reached out to the company that made the BCG and put the factory BCG back in.

https://i965.photobucket.com/albums/...s7ohn9d1i.jpeg

Nothing unusual. Don't lose sleep over this. Cam pin lash exacerbated by SBR (big gas port) and suppressor. You see this frequently in a lot of carbine setups.

Sounds good. I have pretty limited experience with SBRs, I figured you guys could shed some light on it.

I agree. And once it wears to a certain point it shouldn't get any worse.