There ARE precautions you can take for NVD, cams and flashlights.
I replace all glass lenses on my flashlights with polycarbonate. This makes them pretty well indestructible!
I've destroyed a few things I've shot at in airsoft too, a flashlight, someone's kneepad (would have been cooler if he were wearing it at the time lol), and Amos' front handguard ring on his AK to which I still have the pieces lol
Like everyone said, if you don't want it getting shot at, don't bring it in the game.