Today, a guy came into my shop and told me he had a large Glascraft chopper gun. The way he described it, it was on the end of a movable boom. He said he had $7500 in it, but he would let it go for $5000. I haven't had much luck finding much information about one. If anyone is interested, I will persue it a little more and pm you his telephone number, as I have no interest in doing any fiberglass work.