Bravo Company BCMGUNFIGHTER, Offset Light Mount, MLOK Compatible, Picatinny Rail for SureFire Scout Light, Black BCM-1913LM-MCMR Bravo Company's BCM GUNFIGHTER 1913 Modular Light Mount is used with 1913 Mounted Lights (M-LOK Compatible). Fully ambidextrous: made to mount flush or cantilever off either the left or right side of the rail system.