Agar gun
Agar gun is a machine gun or weapon model.
Also recorded as Ager Gun; Coffee Mill Gun; Union Repeating Gun.
Overview
Early rapid firing gun, type of hand-cranked machine gun.
In detail
It is associated with United States.
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
“Agar gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1750527: Agar gun
Consult the source