I was going to add in that I don't see why any field wouldn't allow an AK as a DMR. The AKS74 is an sbr. But there are several videos on YouTube of people with WASR and Saiga AK's with a POSP 4x mounted on them.
I was curious about how strong the gearbox is on the Cyma. I've heard that the Echo1 red star wolverine is just a Cyma internally and has the fancy red star trademarks on the receiver. I have a Cybergun liscensed tactical Kalashinokov 47, t shoots a real consistent 380fps with .25. But the receiver is plastic so I don't want to bother with modifying it. I'd rather have a full metal/real wood version with a full stock, as mine has the folding Galil stock.