it's kimpro protective finish. kimber's version of wilson combat's armor-tuff stuff. kinda like paint. (as far as i know) it's supposed to withstand something like 5,000 hrs of salt water spray or something like that without corrosion. a lot of people have had great experiences with it. others complain of it wearing at the rails and safety/slide stop areas. kinda depends on how picky you are about the looks of your gun. i'm sure i'm not the only one that wonders why kimber put that finish on an aluminum frame anyways.it does lookk good though.
Sorry to contradict a fellow forum member, but that is not Kimpro on the CDP frames. It is actually a deep blue anodized finish. Anodizing is a chemical oxidation used for Aluminum and the color, some think it is black, is merely a pigment that is added during the etching process. It is approximately .002" thick.
No, the Kimpro is just a flat black finish that is available on the Super Match or by special order. It is a polymer based epoxy coating, it is not used on the CDP. The glossy blue finish is their Royal blue finish. It is just a really nicely polished blue job like they used to do in the old days.