After producing the Ero, a nearly exact copy of the Israeli Uzi, the Croatia firm Arma started making some design changes. With the Mini-Ero, they picked a size in between that of the Mini-Uzi and Micro-Uzi, and also used a stock taken from the vz.61 Skorpion (Model 84 in Croatian service).
A big thanks to the Croatian Police Museum (Muzej Policije) in Zagreb for giving me access to film this rare piece for you! Check them out at: https://muzej-policije.gov.hr
I still have my doubts about these PDW-class weapons. The mini- and micro-UZI always struck me as being like the MAC series of SMGs… Gimmicks of questionable utility, and really not suited for actual combat. The use-case seems more geared towards Miami Vice-style cosplay than anything else.
Fun range toys? Sure… Something you want to take into combat? Against real soldiers armed with real soldier-scale weapons? Nope. The bigger SMG weapons like the UZI and the Sterling are a different thing, artifacts of the era before effective assault rifles.
Still, fun range toys I’d like to own, just for the hell of it. Controlling one on full-auto has always seemed like it might be a bit of a challenge, however.
It’s worth noting, in regard to your comment, that these seem to have been issued to police and not soldiers. So perhaps they were in fact thinking of Miami Vice!