If you mean a noise humans hear, it is spelled sound. The gun made a loud sound.
bang, boom, crack, kapow, kaboom
dagadagadagadagadaga...
PewPewPew
I found this. "PRIZE MACHINE GUN and PRIZE MACHINE GUN CO. were made by Simonis, Janssen & Dumoulin who was located in Leige,Belgium from 1873 to 1914." "The name MACHINE GUN has nothing to do with a rapid fire repeating gun. It means the gun was made on machinery as opposed to being hand made and fitted."
steel
In a factory.
Yes
The first true machine gun was invented by Hiram Maxim in the United Kingdom.
The first was the gatling gun invented in 1862
Spelled Uzi, it is a submachine gun made in Israel.
The stick magazine fed hand cranked gatling gun was probably the first machine gun produced.These were in use around 1875-1880.