Tom,

Apologies for the late response. Atlanta is foreign land to me although I was born in Marietta. If you can find out the hex nut dimensions required, then I may be able to find one here. You can ship me the barrel. I have an FFL liscence.

I can't remeber the name but there is a gunshop in marietta that can do it its located near the marietta civic center.... Deercreek I think is the name.
Heady