Multi-Barrel Air Cannon

 Check out this sweet gun with interchangeable barrels.
I built this on my own but I used plans for the kits here at 
http://jjincorperated.weebly.com/air-gun-order-form.html

 You will need:
24" of 4" PVC
4" End Cap
2 X 4" Elbows Male-Female
4"-3" Reducer
3"-2" Reducer
2" PVC Thread Converter
2" Threaded Valve

Assemble like the fallowing picture.

 Now Lets Put Some Air In That Tank
You Will Need
Pressure Valve
Gauge
Elbow
Air Hose Attachment 

'or'

gauge
tire valve



Assemble, then screw into the air tank

 Pop Bottle:
3" barrel
3"-2" adapter
2" thread adapter

Potato:
2" barrel
2" thread adapter

Paintball:
3/4" barrel
3/4"-2" adapter
2" thread adapter

 -Paint ball barrel: AA batteries, paintballs (60-40 PSI).
-Two inch barrel: potatoes, tomatoes, eggplant, other fruits and veggies rubber banded batteries for      shotgun.
-Three Inch barrel: Pop bottles, tennis/base balls.

     Most ammo best at 80-100 PSI.