Originally Posted by Jessejames1979
Can I convert my underfolder to a fixed stock?
It's a non-trivial task.
You'll need a Yugo fixed stock trunnion, then remove the U/F stock and trunnion, and if you want to do it right - weld all the holes and re-drill correct ones before riveting in the new one.
So much involved you'll be ahead of the game buying a fixed-butt AK and then selling off your M70AB2. They're good AKs and sought after, I'll never sell mine.