Holosun AEMS Core Reflex 1x Red Dot - 2 MOA Dot - The AEMS-Core-Red (Advanced Enclosed Micro Sight, Core features) is a compact optical sight with 2x larger lens surface area than standard 20mm micro style sights for increased FOV. AEMS-Core-Red is made from durable cast aluminum and includes a 1.63in dot height (lower 1/3 co-witness) Picatinny mount. AEMS-Core-Red features Holosun's Red Super LED and includes 8 daylight and 4 night vision compatible intensity settings, a precision 2MOA, and Shake Awake technology. A side mounted battery trays houses a 2032 battery which provides up to 50k hour battery life. AEMS-Core-Red strikes a balance between performance and features for users of any level. Large FOV in a Compact Motion On with Last Setting Recall Up to a 50,000 Hour battery life 2 MOA Red Dot Reticle Shake Awake Technology