Hi Chuck, the parts you listed as "should be blue" appear to be on this rifle.

I agree that it was liekly sandblasted at some point, certainly the barrel was and probably the receiver under the "coating". The bolt might be phosphated over a smooth finish, or it might be blued. In the pics it looks greyish, but in-hand it looks dark black. It is definitely not a blasted bolt though.

Do you think the "coating" on the receiver could be iron phosphate?