I have the Sage EBR (preset stock) chassis that I’m able to section with and go back to a wood stock. Precision machined from ordnance quality metal and created to interface in close tolerance with the aluminum stock chassis. An previous Ranch rifle I'd professionally accurized by ARS (now from https://judahzfnlf.blogdosaga.com/31720227/sage-ebr-sks-stock-fundamentals-explained