Again with the PVC: Pop Gun

 No sound effects collection is complete without a 'Pop Gun' sound. Most commercial pop guns are small, giving a sharp high pitched sound. But they are expensive, the professional ones are about $50 as opposed to the 'toy' pop guns that give  a 'plop' for $10. That's OK for most situations but I wanted to get a bigger sound. After all, why take a pop gun to a bazooka fight? 

I built mine from left over scraps. I used a PVC pipe 1 1/8" dia. x 15" long. The inside is a 1" dowel with a small dowel inserted to limit the travel and protect the hand when playing. The top of the slider has a piece of leather forming a loose fitting seal on the inside of the PVC pipe, and a cork for the end. This gives a much bigger and lower pitched sound than one would expect for the weasel/monkey song, but less than the 1812 Overture would need.

It would be nice to make one with a 4" PVC pipe but I'm afraid it might violate some nuclear treaty.