Actually, Prince50 just got done manufacturing the finished prototype of an adapter I designed to take an ATI folder and swap out the butt arm portion to allow for use of any AR style butt stock. I am waiting for it to arrive in the mail to test it and take pics, do range test, etc. Kind of on the line of the ATI AK adapter. This adapter will be a fixed position adapter and I am working on a folding adapter.
So yes, perry500, the slide fire will be able to work on an SKS.(assuming my little adapter works the way it is suppose to)