Does anyone know where I can find a barrel for this gun. I have read that other models will fit but I was hoping to find a correct barell. My father bought this gun for me new in '89 when I turned 10. Sometime around the age of 12, I managed to fire it with mud in the barrel.:banghead: I promise it looked like a peeled banana! Now my son is 10, and I was wanting to pass it down.