MAT-49
MAT-49 is a submachine gun or weapon model.
Also recorded as MAT49.
In detail
It is associated with French Fourth Republic.
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
“MAT-49”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q742435: MAT-49
Consult the source