I am curious as to why it would not count as well. Here is the atf rule on it.
https://www.atf.gov/files/publications/ ... pter-2.pdf" onclick="window.open(this.href);return false;
Now, it just says "muzzle devices" and they have to be permanently attached. What I can not find is a definition of muzzle devices that would exclude the suppressor from being one. If it can be pinned or hot welded (I would not trust weld only) then I do not see why it does not count as a muzzle device. It's attached to the muzzle is it not? Why would you want to tho? For $200 you have a can that can be used on multiple firearms. A good smith to pin/weld will cost at least half that.
Not that I don't trust you TAM but would just like to verify ;)