This is not a concept, but a prototype of a vortex cannon that capable of generating extreme blast of air to blow any assailants off their feet. The Vortex Cannon is capable of shooting a ring shaped of air that formed through a rapid condensation of moving gas at a speed of over 200 miles per hour.
Let’s roll the video to view how the Vortex Cannon works…
No info if this type of Vortex Canon will be mass produced or commercialized.
[ Source: Geek ]