GLOCK OEM 6V Tac Light, Fits All Glocks With Rails, Black Finish, Xenon Bulb TAC3166 Equipped with the ultimate electronic features at a minimal weight" the GLOCK Tactical Light is designed specifically for duty use under extreme circumstances. The high-resistant GLOCK polymer casing holds Xenon-technology electronics packing high luminous power" available at the touch of the ergonomically-placed Soft Switch. 70 lumens