I own an older mossberg 20 ga shotgun (model 500) that I have grown to love and is virtually an extension of my hands when I am hunting. They have actually discontinued this particular model of the 500, so I really want to keep this one in good condition - it is my workhorse gun that follows me through everything.
Heres the problem, throughout the years I have worn the bluing off the magazine tube and parts of the barrel. I recently used Permatex Gun-Bluing kit (several attempts now) to restore the magazine tube ... however it seems it is much more prone to corroding than the original bluing (no surprise) so what I want to do is essentially send off the barrel and mag tube to have them coated with something similar to what Mossberg uses for their Mariner model.
Does anyone know of a company that will do this, and if so, have you had any experience (positive or negative) with having it done.