So I just got my Sport and went to clean it and noticed some discoloration in the chamber as well as what looks like rust along the rifling close to the muzzle. I searched here and didn't find anything about it so I thought I might ask you guys to see if any one else has had this on their rifles.

I'm using Frog Lube to clean it and all the patches come out black and not rust colored. It's a brand new rifle, but I know they test fire them at the factory, plus I'm sure they put oil on before they ship them out.