Description: Blue Laser with Presure Switch & Rail Mount • NcSTAR is the First in the Industry to provide a Safe Class IIIa firearm rated Blue Laser to the US Market! • Blue Laser: Freq. 450nm, Class IIIa Laser • Maximum Output: <5mw • Compact Blue Laser with Weaver/Picatinny type rail mount that will fit Weaver/ Picatinny/ MIL-STD 1913 type rails. Includes mounting tool • Fully Adjustable for Windage and Elevation. Includes adjustment tool • Momentary End Cap Pressure Switch and it also comes with Remote Coil Pressure Switch • Uses 1 CR123A Lithium Type Battery (Included) • Dimensions: 3.5" L x 1.1" W x 1.4" H • Weight: 3.6 oz • Blue Laser is inbetween the brightness of the Red and Green Lasers. • Blue Laser is not susceptible to cold weather like the Green lasers. • Blue Laser will have Laser Beam Trace like the Green Laser at night if there are particulates in the air. • Blue Laser will have a Battery life that is 4X-5X greater than a Green Laser. Approximately 30+ hours of Battery life.