Ares Armor absolutely tortured an Elzetta ZFL-M60 LED flashlight well beyond the average flashlight’s breaking point. They shot this flashlight with a 12 gauge shotgun multiple times, threw it at a steel plate over and over and worse.
After shooting the flashlight at point-blank range with buckshot, they thought it was toast, at least at first. They gave it back to Elzetta and their repair guys found that after replacing the batteries it was still essentially functional.
If you’re looking for what is arguably the toughest tactical flashlight ever made, you need to check out the Elzetta ZFL-M60.