I've had them on a 336 for about 15 years with no issues. Love them and wound up putting some on a couple of 10/22's as well. I don't use any blue loc-tite on mine, just snug on each side.

"Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same." - Ronald Reagan