So, Muzzle Brake attachment….

[FEENIX]

Tikka recommends locktite in their manual….which in the engineering world is often used as a thread sealant

If you think that is the best option, then go for it.

 

[FireFlyFishing]

The only thing a radial brake is good for is using it as a thread protector. That's it.

 

[nksmfamjp]

545 is, can't count on any of the thread locking agents to truly seal the threads. They will do it until you absolutely need them to, and then one or more will fail. That's for pressure, IME both thread lockers and 545 are useless in vacuum.

I meant seal from carbon, dust, debris.