PSA is Bulgarian pattern. They are rolling their own AK-101 Russian-style mags at some point this year.
I feel like I post this in every pertinent thread but it isn’t 2000 anymore.
The vast majority of commercial AKs in 5.56 in the US are Bulgarian. I’d guess Serbian and Polish would be the next two major designs. Converted Russian Saigas as well. Chinese and Finnish guns are statistically meaningless. Bulgarian/Polish/Russian mags are interchangeable. They will also often fit into the Zastava Serbian guns, if a little tight. A carefully designed mag would work across all the reasonably available AKs in the US.
Magpul is too busy being a lifestyle brand to bother with it. PSA will have their mag eventually; Bosnian AC-Unity and Zastava polymer “Z-mag” options are currently available for under $25 and will work in both major mag well patterns.