I’ve run into the same issue — a lot of AK-pattern guns here come with 24mm or 22mm threads, and trying to run NATO-spec muzzle devices (14mm CCW) on them turns into a scavenger hunt. Either you find some overpriced CNC piece from halfway across the world, or it’s out of stock. I’ve looked into Ares/Amoeba too, and yeah — they’re mostly for their own platforms, not true AK threading.
Adapters both ways (24/22 to 14, and vice versa) would have a solid niche. Especially for people trying to slap on suppressors, comps, or even tracer units that are all 14mm CCW by default. Plus, the whole cursed AK aesthetic with a NATO can is chef’s kiss.