I'm sure Badspot could do this, i think you need engine changes.
No,I think that you could model it,so the light can only come out of the tip,but I'm not sure so meh.
The shape of the model won't change a thing.Would it be possible to shoot damage-less, invisible projectiles that make light on collision with something? That way, you'd have a "sphere" of light where the flashlight beam hits.
He means having a model with a light mounted on the end of it, so it looks like a flash light beam but it's just like the default