Maxim gun
Maxim gun is a medium machine gun or firearm model.
Overview
The first self-powered machine gun, invented by Sir Hiram Maxim in 1884.
In detail
It is associated with United Kingdom of Great Britain and Ireland. The record gives 1883 as its date of establishment or first appearance.
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
“Maxim gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q282352: Maxim gun
Consult the source