Project world → screen. The lines will be drawn in screen-space but connect 3d world coordinates.
UMG will give you more flexibility, though. Similar results.
Shakies in the vid due to 
- apologies. 
I am looking to draw a forward line from a point just like a laser beam.
Spline + SMC is OK, particles might be better. Depends on the desired fidelity / control. Absolutely try both.