The XSC-B is designed and engineered to mount onto a wide variety of modern pistols. The single-output XSC, features a premium LED that delivers 350 lumens of intense white light shaped by a precisely engineered smooth parabolic reflector. Its beam pattern features a bright central spot for positive target identification and generous peripheral light to help maintain situational awareness. The XSC also features a unique rechargeable battery (Model B12) that can be replaced quickly and easily. Mfg: Surefire