HowTo: Make a Wicked Powerful BB Gun With an Air Compressor
Below, David Ye demonstrates how to make a sick DIY BB gun using an air compressor. Ye says:
"I got bored and decided to make a BB gun using my air compressor. The secret sauce is a one way valve that blocks air from the firing chamber but allows air in the other direction to rapidly propel ammo into the gun. This allows me to tube feed BB's, even when the gun is inverted. It's also much faster than gravity feed versions."
See it in action, and then make-it-yourself: