Carlo
Carlo is a submachine gun or firearm model.
Also recorded as קרלו.
In detail
It is associated with Sweden.
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
“Carlo (submachine gun)”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q25496993: Carlo
Consult the source