Instead of using a ball valve or other such contrivance to dump air directly from a reservoir into the chamber of this PVC air cannon, [Ben] is using a much more clever design. This is a barrel ...

That’s why [The Stone Donkey] built this pirate cannon ... of the design is pretty brilliant. Three segments of PVC and five fittings make for a realistic looking barrel that won’t throw ...

The single-barrel GSh-301 cannon was developed by the State Unitary Enterprise “Instrument Design Bureau” in Tula, by renowned weapons designers Vasily Gryazev and Arkady Shipunov. It entered ...