Gatling guns have been the first firearms with a firing rate close to modern machine guns. Their principle is easy: A set of rotating barrels are fired by cranking a wheel. This makes them technically and legally a repeating gun, not a full auto one - but it is close enough.
The Slingshot Channel took the challenge to design a rubber powered version of Mr. Gatling's great invention. And here it is: Eight 20 mm balls, on their way to the target in less than half a second. The theoretical firing rate is 960 rounds per minute, slightly faster than that of the popular M16 assault rifle.
The video also shows how you can fire single shots with the weapon.
A presentation brought to you by The Slingshot Channel!