Tm7, Considering that their's not alot of them out there, and I've had this one since the early 80's, Don't even remember where I bought it, but I got two of them at the time, so my son and I could shoot together, so it has a sentimental value to me. Son still has his, and he has two Sons now. You get the picture.
I cant tell what the metal is yet, didn't get as far as taking it apart and testing it, it would be an easy piece to make except for the fine thread that runs through the entire length of the bottom, sounds like a winter project, LOL.....steg