This Unreal Engine 5.3 Gameplay Ability System video is about creating a Laser Beam Gameplay Ability for hitting, and later, damaging Enemies.
We start by creating the Laser Beam Niagara System, and follow up wiht the Laser Beam Gameplay Ability. This will spawn the Niagara System with it’s Start Location attached to the Character Mesh, and keep updating it’s End Location either where the Cursor is, or whatever it hits on the way there.
https://dev.epicgames.com/community/learning/tutorials/XaPv/unreal-engine-47-player-powers-laser-beam-let-s-make-a-top-down-shooter