Korth company has more information on the models if you pursue to order one.
Instead of posting a 2 yr old price list from Earls Repair, aka Korthusa. Whom imported for Walther and Korth as proof..
http://korthwaffen.de/
You will not find the semi-auto on their site anymore. Nor USA having a distributor..
I had to go with Pistol Dynamics. Paul makes some pretty fine weapons.
Bc1023
It looks like you have some nice guns in your colection.