Not to be contrary or anything but are you sure it is stainless? While CVA has some stainless rifles and built some years ago, most of the non blued ones put out in the recent past have been nickel finish, not stainless. I don't have any nickel guns but I understand they have a tendency to tarnish and if the finish is unstable they can rust just like a blued gun. What model gun do you have and how old is it (last 2 digits of the serial # is the year of manufacture)? That might give a clue as to what it is made of.