I am wrapping up my first AR build and I'm getting ready to mount the barrel. My question: Should I use anything to treat the threads, Loctite or never seize? I have seen both used. Recommendations? Pros/Cons of using one or the other?
I never had, but that does not mean you shouldn't; I just don't know.
I've mounted ar barrels w/ high temp anti sieze and high temp wheel bearing grease and never had any issues pulling them back apart. I only applied it to the threads.
Edit to clarify: I’m talking about castle nut to upper threads. I’ve never mounted ar barrel extensions to barrels; always bought barrels w/ extension already installed.