I wouldn't weapon mount any of these on anything other than an AR, FYI, and I really don't know if I'd do that.
Lots of folks seem to have mounted these with good results, but to appease your inner rambo its an important consideration.
I have to say my PolyTac Streamlight non-weapon rated light has held up quite well to 7.62x39 and 5.56.
When I despair, I remember that all through history the ways of truth and love have always won. There have been tyrants, and murderers, and for a time they can seem invincible, but in the end they always fall. Think of it--always.