Inspired by Mil-Spec Romeo-M17; Establishes 5 total points of contact to create the strongest lockup in the industry; Longer focal length to dramatically reduce parallax and create an ultra-crisp reticle; Rugged 7075 aluminum housing with a fully enclosed and sealed optical system; Distortion-free aspherical glass lens; Motion Activated Illumination; Industry's lowest deck height for standard-height iron sight co-witness; 20000 hour battery life with side load battery; 15 illumination settings including 3 dedicated night vision