Object LookAt() player aim direction

How do I make object to LookAt() player aim direction?
I want to make object to always be facing direction at which player is shooting.
And I need to do this inside serverside script.

Is the character placing the object into the world during play, or is it a static object that's already there?

Character is placing object.
It is basically lightning effect object coming from weapon. Very similar to Lightning Gun from Quake 3 arena