The Mezzol was briefly available in AliExpress (from the same store that used to sell Eagle Eye flashlights) — I remember checking those Mezzol flashlights in AliExpress, but wasn’t able to order them. The shop seems to not be carrying Mezzol (temporarily?) when I checked again now though.
The store on Aliexpress was either official or directly associated with the manufacturer. It was there that I asked for a compact reflector head for XHP70 and they fulfilled the request. But unfortunately since the beginning of January there is no connection with them.
I really liked this flashlight, I would buy another one, if they are available and an interchangeable head to it.
I hope the manufacturer did not close.