The BCM 1913 Light modular Mount- KeyMod is designed for use on most common 1913-rail pistol/weapon light systems. It features multiple mounting holes for ideal placement, designed to mount on the 3 or 9 o'clock rail positions, fully ambidextrous and made to mount flush or cantilever off either the left or right side of the rail system. The light mount is constructed of aluminum and is intently designed to be low-profile and snag-free. Includes 1/8" Hex and T15 Torx drive wrench.