The person who posted on that forum has his own blog. Your question relates to his blog entry of 12/5/21.
There’s a lot of information there, and most of it makes sense to my engineering brain, even if I do not personally have 100% confidence in a few of the things stated there and elsewhere in his blog.
Example:With all due respect to the person who wrote that, the internals on MY two Pythons have a reasonable number of MIM parts. They are very good MIM parts, quite possibly the very best (supposedly made by Pratt & Whitney) but I’m not aware of any MIM being used in a $6K Korth.>Every internal part is made from Colt’s new stainless “Super Steel” that’s extremely hard and tough. Extremely. This steel is fully within the Manhurin and Korth league. I know this because I have owned a Manhurin and I own a Korth.
https://www.heffronprecision.com/blog