It will probably be a little bit less recoil with RK-2, it is just still locked for me. ALso, if you switch stock to Magpul PRS, it will give you +2 ergo, but it's ugly.
New ergo/recoil reduction stats as in this build now could be achieved by different builds, no more "1 meta build to rule them all", as it was before. This is just an example.
P.S Zhukov stock does not work as it was before the patch. And I didn't find any way to make less recoil than ~58.