Re: My new LMT MWS 260 barrel came today.
I never thought they were threaded as they were not threaded at the Shot Show.
As for getting one threaded, that would be annoying to have to pay more to have a modified barrel. If I did want it threaded, I would not use gunsmith. It is not a gun but a barrel. I would use a machinist and give them AACs drawings.
As for asking gun makers who their sub contractors are, it should be expected they won't tell you and it is hopeless to make sense of the information anyway because there is a drawing package which defines the part and that is what controls how it is made. Hundai could make parts for Mercedes and they would be awesome because they would be made to Mercedes specs.