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 condition, the Mepro M22 is suitable to use with NVDs as well as magnifiers. Tritium illuminance is warrantied for ten years. Features: 100% self-illuminated aiming solution; no batteries needed Reticle illumination is adjusted automatically based on ambient light levels at the optics location Available in 10 MOA triangle reticle Compatible with NVDs and magnifiers Compact, lightweight ergonomic design Multi-Tool included for adjustments 10 warranty on tritium illuminance Specifications: Weight: 9.1oz Dimensions: 3.9"L x 2"W x 2.7"H Display Window Dimensions: 1" x 0.8" Reticle Color: Red Height Over Bore: 1.5" 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: 66ft for 1 Hour Operating Temperature: -40AdegF to 140AdegF Storage Temperature: -40AdegF to 160AdegF