This is a Surefire Weaponlight known as the KM1-E, model KM1-E-BK.
The KM1 bezel assembly provides both white light and infrared illumination from a single 123A battery when used on an M300 Scout Light(R). Select the appropriate spectrum for the mission by simply rotating the bezel. This small" rugged Weapon Light features SureFire's proprietary TIR lens" a far-reaching" high-intensity beam with ample surround light. Constructed of lightweight aerospace aluminum coated with a Mil-Spec Hard Anodized finish" the ultra-compact KM1 will withstand the rigors of combat without weighing down your weapon. Upgrade your Mini Scout Light(R) to 250 lumens and 100 mW of infrared illumination with the KM1.
Features:
Virtually indestructible LEDs
Rugged, durable and combat ready Hard Anodized aluminum body and tempered window
