Who makes an after-market barrel, for a 77/22, that is threaded?

Threaded at the muzzle?

TacTical Solutions. Kinda ugly though.

Yes, want to fit mine with a bit shorter barrel, and a suppressor.
Haven't got much hearing left, unfortunately. Want to protect what's there.

Thank you, I'll look into them.
Keeping the original barrel for "beauty pageants"! LOL!

Only Tactical Solutions barrel I’ve seen is for the older v-block 77/22’s. I have a threaded (not muzzle) version and would like to have a shorter barrel with a threaded muzzle myself.

Connecticut Precision Chambering will shorten and thread your muzzle on the Ruger barrel.