The HK32 (a G3 chambered for the 7.62x39mm round and designed to accept AKM magazines) seems to support the AKMR concept, but due to the reasons I previous cited in post #40, I still think it's highly unlikely that the Soviets would have invested in such a weapon.
http://www.thefirearmblog.com/blog/2...n-in-the-wild/