Here is a link to the Knox stock. Its a Gen 3. It will also come with a Lucy adapter from Mesa tactical. Used one season, in great shape, and have original packaging. $120 shipped. Email tinz1722@aol.com
https://blackhawk.com/knoxx-specops-stock-gen-iii/
https://www.mesatactical.com/products/lucy-adapter-for-20-ga-shotguns-rem-870.html
Bump!
Text or call (662)871-2444 if interested