Since we're being pedantic, it wasn't "Surefire pro-tips," it was "Malkoff pro-tips." I don't use Surefire hosts, but I use Surefire compatible drop-ins and hosts, where the letter leads, thus the confusion. I'm sure the transposition was some hilarious IP legal nonsense avoidance, but that stuff is still around and being made, while the Surefire stuff is mostly just vintage collectibles at this point.
For example, here is a selection of
P6 drop-ins:
KDLITKER P6 P60 LED Drop-in Module
kaidomain.com
In 2025, most people aren't using Surefire branded products for this (especially if they're buying them new), and so the more "Chinesium reversal" is what they'll tend to see, which, again, confused the crap out of me when I started. For anyone just starting down this path, they're probably not going to be paying the high prices for NOS Surefire stuff, so the exact Surefire nomenclature isn't nearly as common these days (and yes, I see the irony and confusion in that).
So, the idea being that if you see something "P3," that's means for ~3V, "P6" ~6V, "P9" ~9V.
It's funny you posted that, cause I think I remember seeing you once posting a picture of the lanyard between the screws, and I ALWAYS thought it was a really neat idea, but I never did it because, in the back of my head, I was always thinking, "I wonder if the screws would back out if I messed with them..." Haha.
I think I saw some people say they use loctite. If you got some of the purple one, that's SUPER low torque, and should work fine (I actually REALLY prefer Vibra-tite to Loctite for anything I am going to remove/replace more than once).