Mine has almost a 1000 rounds and is fine in all those areas except on the secondary locking lug area. That's the only area where it shows ruff sings of wear. It shoots great but I am concerned as well. Nice looking rifle and even if I wanted to get rid of it I probably can't, no one seem to want this rifles anymore. I got a good deal on it but now I think it wasn't so good after all. I still like the rifle just not sure what will happen in the future.

This is disheartening to see. I was saving up for a C39v2 but Rob Ski from AKOU found the same issue.

Looks like u received a bad one. I see signs of corrosion already send that thing back