Erma EMP
Erma EMP is a submachine gun or firearm model.
In detail
It is associated with Germany and flag of Nazi Germany.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Erma EMP”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q787405: Erma EMP
Consult the source