As promised.
I finally completed the AR handle for my gun show thermos. I could not locate a shot-out barrel so decided to make my own using the dimensions of a good one I acquired from a friend. To keep the center of gravity low, I turned a piece of 4” phenolic, rather than steel, to the same contour of an actual barrel and cut some 1/2 x 28 threads for an A-1 flash suppressor. A little black textured paint and it matched the receiver. Maybe I should make it really "bad" and paint the thermos black also. Yah I know, too much spare time but it is unique and will make a good conversation piece.