This person claims the HQ-20 isn't even an ABMD due to its radar configuration
He made a detailed thread on this but in Persian
If true, I bet it's from Pakistan.Ukrainian military shot down a Russian Kh-101 cruise missile with the help of a FN-6 MANPADS.
My bet is UAE, as they had a history of importing and exporting such weapon system.If true, I bet it's from Pakistan.
Aliexpress
Edit: In all seriousness, FN-6 is like Type-81, or HJ-8. One of those widely proliferated weapons at this point, could be purchased anywhere. Rebel groups use them all the time.
It's Iran missile captured usmc when they send houthi by seaMy bet is UAE, as they had a history of importing and exporting such weapon system.