Brügger & Thomet MP9
Brügger & Thomet MP9 is a machine pistol or weapon model.
In detail
It is associated with Switzerland.
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
“Brügger & Thomet MP9”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q996888: Brügger & Thomet MP9
Consult the source