The Puckle Gun: Repeating Firepower in 1718
The Puckle gun was not a big success. It's mostly a curiosity for being an early machine gun, of a sort.
I'm looking at this thing and I'm thinking there was a great deal of machining involved in making this thing, which leads me to wonder when the first metal working lathes appeared. Lathes have been around since the 13th Century BC, but they didn't perform precision cutting of metal. Mostly they turned wood into spindles or columns.
But then we have this:
The first fully documented, all-metal slide rest lathe was invented by Jacques de Vaucanson around 1751. - Wikipedia
That's 33 years after the Puckle Gun was introduced. So maybe the most interesting thing about this gun was the advanced machining techniques that were used to make it.