What was the first automatic firing machine gun (no hand crank) and when was it invented?
The first fully automatic gun was the Maxim machine gun invented in 1885. It was the first gun to use the recoil of the spent round to eject the spent casing, cock, and reload the gun. It also had a water jacket to keep the barrel from overheating and was capable of a sustained rate of fire of 500 rounds per minute. http://www.spartacus.schoolnet.co.uk/FWWmaximgun.htm http://en.wikipedia.