The M3 Tactical Illuminator is compatible with the GLOCK handguns with accessory rails as well as other popular models (such as the Beretta Model 92/96 and SIG P226), and lives up to its name. Compact and lightweight, the powerful M3 offers fast and significantly clearer identification of the target. Weighing under 4 oz., this white light illuminator will n    ot hamper performance or shooter skill.