Universal Rail-Mounted Red Lasersight. The universal design of the Rail Master offers quick Instant Activation by simply "tapping on" and "tapping off" from either side with the ambidextrous activation control tabs. Additionally, the CMR-201 features a 5 minute auto-shut off feature that will power down the unit to conserve battery life if the laser sight is unintentionally activated.
Fits pistols*, rifles, and shotguns with M1913 Picatinny or Weaver-style Accessory Rail.
*With a minimum of 1-1/16" from recoil lug