Howa Mini Rifles, Builds, and Upgrades

They're metric so choose someone that knows that and can thread metric. FWIW the Mini's are M22 x 1 Right in between 24 and 26 TPI.
I was cutting metric threads in high school machine shop 30+ years ago. Not hard to do if you have a lathe that can do it. Most lathes manufactured in the last 40 years have the ability to cut metric threads. If a gunsmith refuses to work on Howa Actions and a few other that use metric shank threads, usually it is because their equipment doesn't have the capabilities to do so.

Jay
 
Never said cutting metric was hard. It was only a note and a suggestion to ask before you leap. There’s a lot of old but good lathe’s out there in good gunsmiths shops that don’t cut metric or the transposing gears were lost to the wind long ago.
 
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