This is definitely a way to ban the saiga 12. With it’s 20 drum mag it’s awesome. It certainly would come in handy when confronted by a Urban “flash Mob”.
They’re working on reliable 30 round drums for it now. I’d suggest that you have a GripPod or other bipod for it at that point because it starts being kind of heavy.
I actually like the 12 round drums that are out for it now better than the 20s. The weapon balance is better.