Gatling Gun
Title.
The Gatling Gun has been a major contributor in today's military also. It has been modified into much larger forms that are now mounted on anything from Destroyers in the ocean to airplanes in the sky. This gun will probably keep being updated and modified throughout the world for many years to come. Richard Gatling achieved his goal in making the ultimate weapon.
GAU-8 Avenger: Often used on planes, ships, etc.
