my first cannon a simple design it pressureizes a large back comparment.once the barrle is filled, a valve releases the pressure and shoot the projectile.

parts list

6' of 1 1/2 " pvc

2' of 3" pvc

one three way pvc the third part converts to 1 1/2"

one 1 1/2" valve

one 3" end cap

one 3" end to 1 1/2 " converter

one 1 1/2 to female screw in

one metal screw in that fits preveus

oen metal screw in that fits preveus

one bike pump screw in