Home Forums Birds & Dogs Shotguns Choke tube maker??

"... Yes, send the barrel off to any of the ones who make them and they will make all you want. ..."
...but you forgot to add, "for a small, nominal fee"! LOL!
I just checked the Briley site.
They will make a tube to fit any barrel.

When I had my shotgun barrel tubed, it was $300 and Briley furnished three (3) tubes.
They offer about a dozen different choke selections.
If you want more than the three tubes, extras run about $80 a pop.

More than likely a Tru-choke system installation. Colonial calls their equivalent TrueSize. Hastings also used to make "Tru-choke" pattern chokes. Both chokes below are Hastings.

The only other aftermarket choke installation I am aware of is Briley's system. Briley thinwall chokes have square threads on the muzzle end of the choke, and are generally longer than RemChokes.