This is my first cannon that I built a few years ago. It is meant to shoot AA batteries or Nerf Darts. Since this was a prototype to a higher pressure cannon,LINK, I didn't use pressure rated pipe, It can only take about 40 psi safely. It still can shoot a nerf dart a good 50-150 ft, (an estimate).

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More by dremeldude:Road Bike Converted to a Comfort Bike Nerf Assault Rifle the everything cannon 
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