blackened stainless steel

[pistolaro]

I would like to have the stainless steel slide on my H&K compact blackened, not COATED , but similar to what SIG does on their pistol slides. Can anyone recommend a company that does this process?  Again, Iam not wanting NP3 , polycoat, duracoat, tuffcoat, blueing,parkerizing.....etc. BUT a chemical process that turnes the silver to black.
       
            thanks, pistolaro

[Walt-Sherrill]

SIG doesn't turn silver to black.  It COATS the silver with a black finish.  So its really little different the the finishes you don't want...

The problem with the "blackening" treatment is that you end up with a finish that can still be damaged, and any of the low-care advantage gained from having a stainless steel gun is generally lost.  (Its less prone to rust, but it'll still rust.)

SIG slides begin to show wear relatively quickly...  (Been there, done that.)

[KingPolymer-III]

Is this similar to what Glock does in the way of a nitrous acid bath?

[BRASMAN]

Can you anodize stainless? That would be an option if you wanted something not like a poly coat. I am not sure about the wear factor though.