BCM LIGHT MOUNT MOD 0 KEYMOD1" BLACKFEATURES-Gunfighter Light Mount-1"-KeyMod Version -Mod 0-Black-Fully Ambidextrous mounting; either the left or the right side of the rail system -Fits majority of popular 1-inch round body tactical light systems -Design to mount on the 1:30 or 10:30 o'clock (upper 45 degree) rail positions-Strong Aluminum construction-Intently designed to below-profile and snag-free-Patent Pending anchoring system-Minimal added weight, 1 oz