The Puckle gun of 1718

[T. A. Gardner]

A very early repeating weapon of some interest. As the video says, only two were sold and those apparently were not used in actual combat. Otherwise, the Puckle gun remained an engineering marvel of it's time that was ignored by the military even as it worked rather brilliantly.

Given that the gun in the video is partially original, it's definitely something that was ahead of its time.