Some mad lad bolted one of these to the hand guard of an L85 and called it a weapon light.
This was, of course, really to add mass to the rifle for when it was used as a bludgeon, because it is so British that it spontaneously ejected its own magazines as a form of silent protest against violence.
My phone only has one hole and it’s way too small for me to use that way.
Your mileage may vary though, I don’t judge.