Viridian Weapon Technologies X5L Gen 3 Universal Mount Green Laser With Tactical Light (500 Lumens) Featuring INSTANT-ON, Removable Rechargeable Battery 930-0015 The new Viridian X5L Gen 3 is the latest version of the original green laser sight + tactical light combo. First launched in 2008 this family of products has continued to innovate through the years. The Gen 3 version is no exception. The X5L is the best and most technologically advanced weapon mounted accessory ever.