Hiram Maxim posing with his invention, The Maxim Gun, the world's first fully automatic machine gun (undated, c.1900) "760 shots per minute" [1352 x 850] : r/HistoryPorn
The Huot Machine Rifle: A Ross Conversion
What was the first fully automatic rifle? - Quora
Machine gun - Wikipedia
Machine pistol - Wikipedia
Machine pistol - Wikipedia
The Puckle Gun or Defense Gun
A Brief History of the Assault Rifle - The Atlantic