Description: Blue Laser with Quick Release 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 a Quick Release Weaver/Picatinny type rail mount that will fit most Weaver/ Picatinny/ MIL-STD 1913 type rails. • Fully Adjustable for Windage and Elevation. Includes adjustment tool • Push Button Rubber switches on both sides of laser body to turn laser On/Off. • Uses 1 CR123A Lithium Type Battery (Included) • Dimensions: 2.9" L x 1.0" W x 1.5" H • Weight: 3.7 oz (with Battery) • Blue Laser is in-between 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.