This one.
http://www.ultrasabers.com/product-p/mls.htmIt is the link that you have on top.
Here is the description on the LED module
This unit comes pre-installed with a reflector or collimator lens and an LED of your choice. Also, we can install a Quick Disconnect for use with any other saber installed with
]Quick Disconnect by Ultrasabers.
These units currently fit into the Bane, War Glaive, Dark War Glaive, Arbiter, Dark Arbiter, Consular, Archon v2,
Bellicose, Shock LE, Dark Shock, Manticore, Overlord and
Raven.