Bolt will work, Elite stock will work. It already has the forked lug cutout.....but you need a Mountaineer or Ultra Lite breach plug. The plug is available from Lehigh Defense for $24.45 shipped with 1 vent liner. Another $14.50 if you need the bare primer adapter for the bolt.

Extreme stock depending on how new will likely need minor material removed in the lug area. New Extreme stocks should already have the cutout.