Mark Keefe of American Rifleman suggest that the 28 Gauge Raging Judge is not the target of the upcoming ATF announcement. I’m betting you can’t find a Saiga for sale anywhere currently.
UPDATE: I should mention I still don’t get how this isn’t a Title II firearm, given that it looks to have an overall length less than 26 inches, and the 28 gauge has a bore diameter of 0.550 inches. If it has a rifled barrel that large, it’s a destructive device. If it has a smooth barrel, even one that tapers down to under 0.5 inches, then it would still be an AOW. It would need a rifled bore that’s less than 0.5 inches. Can you get 28 gauge down that small?