Water Rocket (Bottle Rocket) Adapter With Giant Fins

This is a derivative of my 2 Liter bottle to 1/4 NPT adapter with giant Tom Swift style fins. The adapter is designed to let you quickly turn an ordinary house hold pop (soda) bottle into a projectile by adding water and air pressure. the 1/4 NPT quick disconnect gives you a simple and easy way to add air pressure and also works as a launch mechanism when you release the collar.

In all honesty this is a bit impractical as the fins are huge and brittle and the purpose of this object is to be l