Perhaps not required but to me it's like insurance. You never need it......till you need it. I work in an industry where I've used probably a few gallons of loctite, mostly Blue. I couldn't count the number of times I've seen, or read about someone with a loose screw (scope rings etc.) causing problems. Why take the chance when a small drop of the Blue will prevent the possibility of problems later on. If you already have assembled parts there is a thread locker you can get but I don't remember the #. By the way, if you ever do use Red, don't fret if you have to disassemble, it won't release easily. Just use a heat gun and get it kinda hot, and it will release. A bit more trouble but not that difficult. No disrespect to Mr Guntech, he's wiser than I am, I just think you should use it to be sure. Good luck.