I've been looking into this myself here lately.
The AAC 762-SDN-6 would fit the bill for multi-gun use if I could find a way to get one on a AK47, and also a AK74 if possible.
The AR15 application is simple. And I've found ways, like the Delta P FSB/adaptor, to install an AAC Blackout flash hider on an M1A.
What I haven't found is a AAC suppressor-ready flash hider for an AK, either 14-1 LH or 24-1.5 RH. Either I overlooked them or they don't have them.
Does anyone know what I need in order to get the 762-SDN-6 on an AK, at least the AK47? I would like to be able to suppress the AK74 too but will do without if need be.
Edit : I've seen 14-1 LH to 5/8"-24 adaptors but I've never had any dealings with one. Is this a viable alternative?