Holosun AEMS CORE X2 Reflex Red Dot Sight 1x Green 2 MOA Dot Reticle Black. It also introduces a new four-post lower 1/3 co-witness mount. AEMS CORE X2 remains backward compatible with the original AEMS mounts. Specifications for Holosun AEMS CORE X2 1x Reflex Red Dot Sight: Manufacturer: Holosun Color: Black Fabric/Material: 7075-T6 Aluminum Magnification: 1 x Objective Lens Diameter: 1.1 in Reticle: 2 MOA Dot Illumination Type: LED 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 Red Dot Sights-Footprint: Not Applicable Fit: 1913 Picatinny Rail Features of Holosun AEMS CORE X2 1x Reflex Red Dot Sight Shake Awake 10 Daylight and 2 NV Settings Package Contents: Holosun AEMS CORE X2 1x Reflex Red Dot Sight Holosun AEMS-CORE-X2-GR: AEMS CORE X2 Reflex Red Dot Sight 1x Green 2 MOA Dot Reticle Black