Introducing the Holosun SCRS-GR (Solar Charging Rifle Sight) - Redefining Precision and Versatility! Key Features: Advanced SCS Technology: The SCRS-GR takes Holosun's SCS technology to new heights, offering an ultra-compact 20mm tube sight tailored for long gun applications. Multi-Directional Light Sensors: Equipped with multi-directional light sensors, the SCRS-GR ensures optimal reticle intensity in various lighting conditions. Auto Mode & Manual Mode: Experience flexibility with an advanced Auto Mode for automatic reticle intensity settings and Manual Mode for precise control of dot intensity. 7075 Aluminum Construction: Built to last, the SCRS-GR is crafted from robust 7075 aluminum, ensuring durability and reliability. Versatile Mounting: Includes a lower 1/3 co-witness, 1.63" mount with Holosun's proven 509T footprint, ensuring compatibility with third-party offset RDS mounts. Tech & Features Highlights: Solar Failsafe(TM): Never worry about battery failure with the Solar Failsafe Technology. The optic seamlessly transitions to solar power when natural or artificial light is available, providing a backup power source. Shake Awake(TM): The SCRS-GR features Shake Awake technology, activating the sight at the slightest movement for instant readiness. Super LED: Benefit from the Super LED technology, enhancing brightness and clarity in any lighting condition. Multilayer Reflective Glass: Enjoy crisp and clear visuals through the multilayer reflective glass, ensuring optimal light transmission. In the Box: Lower 1/3 Cowitness Mount T10 L Key Rubber Cover User Manual CR2032 Battery Lens Cloth Specifications: Optical Specs: 2 MOA Dot, Parallax-free, Unlimited Eye Relief Electronic Specs: Solar & Battery Powered, Unlimited Battery Life, 10 DL & 2 NV Brightness Settings Physical Specs: 20mm Diameter Window Size, Compact Dimensions (1.7x1.35x1.6), Lightweight (2.45 oz) Mechanical Specs: Sturdy 7075 T6 Aluminum Housing, Anodized Surface Finish, 1 MOA Adjustment per Click, 50 MOA W&E Travel Range Environment Specs: Wide Temperature Range, IP67 Submersion, 1000G Vibration Resistance