I'll check on the material and let you know what I found out...another thing that really bothers me is the
HS Undertaker choke was a very rough/tight fit...when I got home I sprayed some Rem Oil on it lightly and got it installed...just hand pressure...it was tight going in and the threads seem rough tightening it up...it fits fine in my friends Benelli Nova.
The factory Stoeger chokes all screw in as they should. So far the gun functions fine...I've shot a mixture of 2 3/4, 3" and 3 1/2 loads thru it. ...no real light 2 /34" loads as I don't shoot those anyway, but so far it eats everything I've put thru it with flying colors.
I hope this gun doesn't prove to be a "turkey" ...pun intended. I plan on using it as my number one waterfowl gun and would like to use it once in a while on turkeys as well.