The new Viridian X5L-FDE Gen 3 is the latest version of the original green laser sight + tactical light combo. It utilizes a maximum visibility 5.0 mW green laser (510-520nm). Ideal for day or night and a bright 500 lumen CREE LED tactical light. Super sleek design fits in most holsters designed for Streamlight TLR. The X5L Gen 3 is compatible with most full-sized railed pistols. Viridian's patented INSTANT-ON technology paired with an INSTANT-ON holster, activates the light and/or laser the moment you draw. The system turns off automatically when you holster your pistol.