Osprey Global Rifle Blue Laser Sight Black Rifle Blue Laser. Green lasers notoriously use quite a bit of energy burning batteries fairly quickly whereas the blue laser uses less than half of the energy to produce the same output. Red and green lasers alike succumb to low temperatures unless rated for this use and are quite expensive and the blue laser is not bothered by temperatures low or high. This is considered an HEV or high-energy visible laser that produces a true 500nm making it the most visible spectrum of light available to the retina. The Osprey Rifle Blue Laser comes with a picatinny mount on/off switch and momentary pressure switch. It is backed by Ospreys industry leading no-nonsense lifetime warranty. Specifications for Osprey Global Rifle Blue Laser Sight: Manufacturer: Osprey Global Color: Black Beam Color: Blue Finish: Matte Attachment Type: Picatinny Battery Type: Lithium Metal CR123A Lithium CR123A Length: 3.5 in 3.5 in Height: 1.5 in Weight: 3.7 oz Fabric/Material: Aluminum Alloy Mount Type: Picatinny Package Contents: Osprey Global Rifle Blue Laser Sight 1 Cr123 Battery Instruction Manual Allen Wrench Brass Key Pressure Switch Osprey Global Warranty At Osprey Global we will repair or replace your Osprey product in the event it becomes damaged or defective at no charge to you. If we cannot repair your product we will replace it with a product in perfect working order of equal or better physical condition. You see it doesn't matter how it happened whose fault it was or where you purchased it. You can count on our warranty for all Osprey Global rifle scopes tactical scopes compact first focal planes red dots lasers binoculars bore sights and accessories. See Full Warranty Information here. Osprey Global Rifle Blue Laser: Rifle Blue Laser Sight Black