Holosun AEMS combines a large field of view in a compact, lightweight package. AEMS has double the glass surface area and is 11% shorter than standard 20mm micro style optics and weighs just 3.9oz. AEMS is equipped with Holosun innovations like Solar Failsafe, Shake Awake, Multi-reticle System, and up to 50k hour battery life. AEMS features a 7075-aluminum housing with removable, clear, flip-down lens covers. The included lower 1/3 co-witness mount is removable providing adaptability across multiple firearms platforms. Specifications for Holosun AEMS CORE X2 1x 1.1x0.87in Holographic Red Dot Sight: Manufacturer: Holosun Color: Black Fabric/Material: 7075-T6 Aluminum Magnification: 1 x Objective Window Size: 1.1x0.87 in Reticle: 2 MOA Dot Brightness Settings: 12 Eye Relief: Unlimited Adjustment Click Value: 2 MOA Battery Type: Lithium Metal, CR2032 Battery Life: 50000 hours Water Resistance Level: IP67 Weight: 10.4 oz Fit: 1913 picatinny rail Features of Holosun AEMS CORE X2 1x 1.1x0.87in Holographic Red Dot Sight: Large FOV in a Compact, Lightweight package Package Contents: Holosun AEMS CORE X2 1x 1.1x0.87in Holographic Red Dot Sight