This is both a weapon and an entity. You can customize your SWEP by spawning a desired lightsaber with the TOOL. Or, If you don't have the weapon, just spawn one and it will inherit customization values from the tool.
Tool controls: Left click - Spawn Entity Right click -Spawn Weapon
Weapon controls: Mouse 1: Attack / Swing Mouse 2: Use selected Force type Reload: Toggle Lightsaber
Press F ( Your "toggle flashlight" key ) to toggle Force power selection Press 1, 2, 3, 4, 5 or 6 to select Force power
If it says "<NOT BOUND>", bind a key to "Toggle Flashlight" and "Slot <1-6>" in your in-game Options menu ( Keyboard tab ). See this image:http://i.imgur.com/9MhWJcQ.png- For more information if you don't know how to read.