The CMR-206 Rail Master® is compact, yet powerful, universal green laser sight designed to fit rail-equipped pistols, rifles and shotguns. The laser sight fits onto virtually any firearm with a modern (M1913 Picatinny or Weaver-style) accessory rail. Ambidextrous control tabs allow the user to instantly activate or deactivate the laser. The human eye processes the color green more effectively than any other color, and Crimson Trace offers the brightest green laser allowed by law, (5mW peak, 515nm, Class 3R). The CMR-206 Rail Master boasts 2 hours of (constant) run time on a single 1/3N Lithium battery, and features a 5 minute auto shut-off for power conservation. The unit is quickly and easily user-installed in moments and can be painlessly transferred from firearm to firearm. The CMR-206 is securely fastened using Crimson Trace’s Secure Lock Technology (SLTT). Fits pistols, rifles, and shotguns with M1913 Picatinny or Weaver-style Accessory Rail. The CMR-206 offers a bright 5mW5mW peak, 515-532nm, Class 3R green laser. Green offers excellent visibility in virtually all lighting conditions. Offers 2 hours of battery life from a single 1/3N lithium battery. The CMR-206 is universal in design and will fit virtually any pistol, rifle or shotgun with Picatinny M1913 (or Weaver-style) accessory rails. Will fit most rail-equipped pistols with a minimum of 1 1/16 from recoil lug. Ambidextrous controls offer instant tap-on / tap-off activation with a 5 minute auto-shut off for battery conservation should the unit be unintentionally activated. Complete user-adjustable windage and elevation adjustments. 5MW PEAK, 532NM, CLASS 3R GREEN LASER. 0.50 AT 50.