Crimson Trace CMR-207 Rail Master Pro Red Laser Universal Sight And Tactical Light - Black - The Crimson Trace CMR-207 Rail Master Pro offers a powerful 400 Lumen LED white light and red aiming laser in a compact and durable unit. The CMR-207 features an aluminum body with ambidextrous activation points. The user programmable modes of operation allow for the laser and light to be used together, or the laser and light used individually. This Rail Master Pro features smart electronics that will power down the unit after 5 minutes to help prevent battery drain if activated during casing or holstering. Fits Pistols, Rifles And Shotguns With M1913 Picatinny Or Weaver-Style Accessory Rail Laser Sight Is Fully User-Adjustable For Windage And Elevation Powered By A Single CR123 Lithium Battery