Pneumatic Cannon "The Utility Gun"

This instructabule will tell you how to make a gun, that can literally shoot anything that can go in the barrel, this instructabules is also vary cheep and vary powerful.

* DISCLAIMER:
I am not responsibly for any or a injure, or involvement with the law on your part, so think safety! Be sure to where proper protection and be sure to secure all protection

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Step 1: Finding the right sise

If you already don't know by other post of air guns, or penumic launchers, a air gun consists of a pvc air tank and a valve that allows the tank to flood the air in to the barrel launching the projectile.

upsides

Having a larger tank allows you to have a more powerful round while having a larger, and thinner barrel allows a more accurate shot, and a larger barrel, allowing more of a variety of things to launch.

down sides

having a large tank adds a lot of weight to the gun and will slow you down, a thinner berral is more likely to break under the pressure of the burst, and a larger barrel could not fire the round if to larg
and a longer barrel will definitely add coast to your maneuverability

For my gun i picked a extra large tank, a medium with barrel and a vary long barrel, my gun is vary power full and fairly accurate.