I have a ban-era Colt AR with a bare muzzle. I bought a Smith Vortex flash hider to Obama/Dem-proof it, and need the muzzle threaded. Probably not something I want to do in my basement with Harbor Freight Chicom dies and a Sears bench vise... :p
I've been searching THR.us for "gunsmith" and "Milwaukee" but haven't come up with much.
The only place I know of for sure that has a gunsmith is Gander Mountain, which quoted me $150 and approximately a two-week turnaround time. I don't know if that's reasonable, or if the Waukesha Gander Mountain has a good rep.
I've called the Shooter's Shop, but their "gunsmithing" is limited to cleaning, scope mounting, and installing drop-in parts. I refuse to do business with Badger Outdoors, because of their general lousy attitude, and public statements the owner/management has made stating they'd like to see private transfers banned in WI. So I don't even know (or care) if Badger has a smith or not.