This is a topic that I have been following (as have a folks whom I train with).
A few folks have found that the AK pistol fits the niche of a higher powered "pistol" that they can carry with a CCW in a vehicle as the carry of a rifle violates state law.
I have been modifying THIS harness for AK use:
With a 1" (or 1.25") strap to come from the shoulder harness. Some folks like a double harness to keep it stable...