Originally Posted by tn7stw
I was told the suppressor needs a shoulder to seal. So I am wanting enough barrel so I don't need an adapter, only the threaded insert.


Adapters for this purpose have a shoulder on them as they are designed specifically for use with suppressors and other muzzle devices. You may be able to get by with a different thread pitch but I would be wary about threading too close to the bore. It all depends on your finished barrel diameter.

http://www.brownells.com/rifle-part...-adapter-1-2-28-to-5-8-24-prod54364.aspx


Thread specs for different barrel diameters:

https://thunderbeastarms.com/tech/thread-specifications

Last edited by wareagle700; 09/23/16.
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