I have neither seen nor disassembled any protected cells that had potting. The protection circuit is usually spot welded, glued, or just sealed under the plastic shrink wrap.
I don’t know the specifics of what a WML requires, but don’t mission-critical applications need primary CR123s?
The...
I use an Efest high discharge battery because the newer emitter seems to need much more than the old emitter, especially after using the highest brightness.
Here is a reputable source. But be advised it’s unprotected.
I hope this is what you were looking for:
SureFire and Modlites on their stock bodies.
SureFire on the Modlite 18350 body.
SureFire on the Modlite 21700 HOG body with adaptor.