This one usually don't have one on:
This got traded for the basis of my M4....
Glock......yes I am a cheap bastard with only one pistol light
I actually don't have a more up-to-date shot of this one...
Does this count?
Pistol light is a Streamlight TLR-1, the carbine light is a Surefire E2D LED Defender on a Larue mount.