I have an AK, They all look somewhat bent, But either your barrel is bent or the pic is at an odd angle, To me anyhow.
You cant find stamps on any of the parts? Not even the piston?
I wish I was of more help.
I have an iron sight weaver rail scope mount, I'm not a fan, Eventually its going to strip out the screw for the stock, But yours doesn't have a side mount, So I guess its 6's