The SureFire M312 Scout Light High Output LED Weaponlight allows users to incorporate a light onto a fighting gun in order to keep both hands on their firearm, ensuring total firearm control and accurate shot placement. The SureFire M312 Scout Light High Output LED Weaponlight uses the company’s proprietary TIR lens, which is designed to give users area lighting that reaches out a distance and also illuminates peripheral areas, ensuring that owners face no surprises in unlit areas. Provides 500 lumens of light Powered by CR123A batteries Total weight of 5.9 ounces Measures 4.9 inches long The SureFire M312 Scout Light High Output LED Weaponlight fe Mfg: Surefire