No but there is a octagon barrel
You will have to call TC for the information. No published data.
Octagan
In good condition the going collectors price is around $240.
Requires hand on inspection.
I too have a rifle matching this description. Any information would be of interest.
Just what you have described. Without more information, no better answer can be given.
Yes
$1000
is about 3,695
It will be eight sided,thus the name hexagon barrel.
yes in most cases it can be interchanged with little or no modification