Precision Armament makes a muzle thread adaptor M4ADP-2-SS 9/16-24 to 5/8-24. I am not sure if this will work for the .338 thoughScrew the Boss off and screw on a suppressor.....no problem getting an adaptor for your suppressor.....
Correction, that will not work on the .338, I just checked, I know it will on my 30.06 though.
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