BB Gun 6mm bullets

First attempt to make a small and powerfull BB gun. Drag the piston back and squeeze slightly on the beck of the tube to fix the piston. Load a BB bullet through the hole and release the grip of the tube to fire. In the barrel there is a small ring to prevent the BB bullet to roll out of the nozzle.

WARNING. Dont shoot at people of animals. This thing is only for fun and for target practicing.