I can't help you with nylon or Kydex, but I have a leather chest holster for my 460 S&W that is top quality, made by a guy who lives in Alaska. If you Google "Guide's Choice Holster" you should be able to find the site - sorry I can't get the link for you now. (slow internet in afsandystan.)

He makes quite a few different types of holsters, and since your Ruger is a popular gun in AK, he's already got some options that fit it.

Edit: The page finally loaded. Here's the link: http://www.diamonddcustomleather.com/Diamond_D_Custom_Leather.php

Last edited by AlaskanMatt; 01/17/12.
"Noone has a more intimate understanding of, or deeper appreciation for freedom than a soldier who has fought for it in a country where it does not exist."