Ron, Thanks for the reply.
The gun that is for sale @64950 and has been since I went to measure it for the reproduction. I had a hand in building all three of the known repros. The short film on that site is my son talking on the Hughes.
New info turns up all the time, like that in the above post which was emaied to me.
Thanks for your help.

Bob Hubbard

PS : If you run across anything new please post it Thanks.