It's the KNS Precision adjustable rear (peep) AK sight.

https://www.knsprecisioninc.com/prod...le-rear-sight/

Anyone have a lead because every website I looked at using my Google-Fu they were out of stock. Amazon had one of those "We do not know if or when this product will be available" warnings. Not there or anywhere else I searched even allowed a backorder.

I've had Mojo's in the past and like a peep sight on an AK. The traditional notch sight, never popular with me anyway, is even more off the table as my eyes get older along with me!