RCH: I don't have it on any of my semi-autos, but have hard chrome on three revolvers. The work was done by Accurate Plating and Weaponry aka Cogan Custom in Safety Harbor, FL. They're located just north of Clearwater. Cogan did a fantastic job with the hard chrome. Another hard chrome specialist is called (I think) Checkmate...also located in FL, up near Gainesvill or Ocala. Hard chrome can be applied in a brush, satin, or polished (like stainless steel from S&W). Prices and turn-a-round time were reasonable.