Looking at what I can find, Nickel based appears to be the best of the anti seize for stainless application

Copper is not good (and having had some bad experience with copper anti sieve on shafts I would never use it for anything but it may have an application, not on stainless though) .


One comment was to avoid a seize up affect is to take the fastener apart. Just the encouragement we need to change barrels often!

And yes when I took my 111 apart there was some kind of material in the threads so they used some kind of Loctite or? on it.