Hard Chrome
Hi,
Here is a bit I have learned about Hard Chrome. I worked in the plating industry as a very young man, and still have friends in it.
First off, I believe it to be very best possible finish for a gun, Extremely high Rockwell Hardness figures of 68-72 are not hard to achieve which makes finish similar to a custom knife.
Anyway, the reason Bob Cogan is the MAN, when it comes to Hard Chrome.
Unlike Electro-less Nickel, which plates evenly wherever it "whets". Hard Chromes evenness of finish thickness is very dependent on Anodes that are built and sized, fit for each particular gun. This makes setup time consuming and expensive, especially first time a particular type of gun is done.
I have companies in my home town that are very good at Hard Chrome on an industrial level, but they will not mess with guns because they feel they will not do enough of each Model I believe.
As far as I know, Mr Cogan does virtually all the US firearms Hard Chrome work. That is a very good reference. Colt, STI, Keltec, virtually anyone who offers it.
Colt does it mostly through Custom Shop I believe, but STI for example uses it on lots of their weapons.
I have had STI guns with a lot of Heavy Competition miles , I have used a lot, and with a good cleaning one is hard pressed to see any wear.
Another nice feature is that it can be applied at a very thin level.