I went to a lot of trouble making this part last month.
It is a scope mount - for arm mount - bi pod tube mount for an 1885 falling block action.
I wanted to have a bipod near the muzzle and not bend the barrel.
I see now that the lens cap is touching.
In many floated barrels there is a hand gaurd tube that is concentric with the barrel. This one is not. The tube is below the barrel.
The word 'forum" does not mean "not criticizing books."
"Ad hominem fallacy" is not the same as point by point criticism of books. If you bought the book, and believe it all, it may FEEL like an ad hominem attack, but you might strive to accept other points of view may exist.
Are we a nation of competing ideas, or a nation of forced conformity of thought?