Possibly. Mine is a toy bazooka that was gutted and retrofitted with PVC piping and a valve. It's a pretty simple mechanism.
But lets try and keep this topic only for those interested in buy howlers.
Also, just so you guys know, the same company seeling the howlers also sells the ones Rocketman recomended.
So if you'd rather buy those, still let me know.
We just need a total order of $300