It's an official
GW Commissar, as far as I'm aware they never did him in finecast, only metal.
They only killed off that model recently, so you only missed him by a year or two.
The old commissar models were way better than the current plastic one
IMO, as soon as I saw previews of the plastic one I bought all the metal versions because I was worried they'd get phased out.
This is the picture that used to be on the
GW website:
This was the other one....