How can i create a laser pointer effect like alien swarm?

Hallo guys, I have to create a laser pointer effect like alien swarm with the smoky effect of laser light, how can i do it?

Spline + splinemesh + animated splinemesh material.

The code and the basic material are somewhere in here:

Starts with “To visualise the measuring process

You need Beam Particle for that with source and target parameters taken from some line trace in weapon class.

Thanks, i try to do this!