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#2134852 - 04/06/08 Sako TRG-42 muzzle thread size???
Rman Offline
Campfire Guide

Registered: 12/31/05
Posts: 2924
Loc: Calgary, AB
Can anyone tell me what the muzzle thread size is on a Sako TRG-42. I think 1/14 but am not sure. Thanks.
R.
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WTB Sako L61R Barrel in .338WM.

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#2135269 - 04/07/08 Re: Sako TRG-42 muzzle thread size??? [Re: Rman]
Brain Offline
Member

Registered: 01/18/07
Posts: 142
Loc: VA
M18x1

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#2135854 - 04/07/08 Re: Sako TRG-42 muzzle thread size??? [Re: Brain]
Rman Offline
Campfire Guide

Registered: 12/31/05
Posts: 2924
Loc: Calgary, AB
Thanks!
R.
_________________________
You can run, but you'll just die tired.
Apparently, now turdlike?
WTB Sako L61R Barrel in .338WM.

Top
#2135901 - 04/07/08 Re: Sako TRG-42 muzzle thread size??? [Re: Rman]
Brain Offline
Member

Registered: 01/18/07
Posts: 142
Loc: VA
No problem.

Are you installing a brake? Suppressor?

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#2137574 - 04/08/08 Re: Sako TRG-42 muzzle thread size??? [Re: Brain]
Rman Offline
Campfire Guide

Registered: 12/31/05
Posts: 2924
Loc: Calgary, AB
I am looking to install an Armalite AR 30 brake on this rifle. Armalite's thread size is 5/8 18 UNF 3A. I am not the best machinist in the world, so are these threads larger, or smaller than the 18/1 threads on the Sako? Can an adapter be made? Could the threads on the Armalite brake be machined out, and a sleave with the proper threads installed? Any help would be great.
Thanks.
R.
P.S.
5/8 diameter converted to metric is 15.875. So the existing 5/8 thread size is smaller than the metric 18mm. This leaves thread depth. 18mm minus 15.875mm is 2.125mm, divided by two is 1.0625. Translated to inches, this leaves a thread depth of .042 inches.
Would this be enough material left to work? Is my math right? Help!
Thanks again.
R.
PPS Have moved to Gunsmith Forum. Thanks. R


Edited by Rman (04/08/08)
Edit Reason: Moved to Gunsmith Forum
_________________________
You can run, but you'll just die tired.
Apparently, now turdlike?
WTB Sako L61R Barrel in .338WM.

Top
#2137733 - 04/08/08 Re: Sako TRG-42 muzzle thread size??? [Re: Rman]
378Canuck Offline
Campfire Tracker

Registered: 11/06/06
Posts: 5006
You might be able to do something with a heli-coil. These are used when you strip out a spark plug. Ask some machinists or good mechanics. I would adapt the muzzle brake to fit the metric barrel. Although your country isn't metric, heli-coils are produced in your country for world sales. Never done this but repaired some spark plug holes on alluminium heads more than once. Just an idea to kick around.
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