The new Mepro M22 is the next generation of the legendary Mepro M21 Reflex Sight, used for decades by the Israeli defense Force, Militaries, and Law Enforcement agencies worldwide. Smaller and more compact, the Mepro M22 is a reflex sight with fiber-optic illumination by day and premium Swiss made tritium vials by night that will perform in any lighting condition with no need for batteries, ever. The transition between the two systems is instantaneous and automatic. It's rugged, battle-proven construction meets or exceeds rigorous standards to thrive in the harshest environments. Extremely reliable in any weather conditions, the Mepro M22 is suitable to use with NVDs as well as magnifiers. Tritium luminance is warrantied for ten (10) years. Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. Weight 9.2 oz (260g) Dimensions: (L x W x H) 3.8" x 2.2" x 2.7" (73 x 56 x 68 mm) Display window Dimensions 1" x 0.8" (25 x 20 mm) Reticle Color Red Height Over Bore 1.5" (39 mm) Windage/Elevation Adjustment 1 MOA Total Windage Adjustment +/- 60 MOA Power source Fiber optic (Day) / Tritium (Night) Magnification 1X Weapon Mount Picatinny Rail Quick Release (MIL-STD 1913) Water Resistance 66 ft. for 1 hour (20m) Operating Temp -40AdegF to +140AdegF (-40AdegC to +60AdegC) Storage Temp -40AdegF to +160AdegF (-40AdegC to +71AdegC)