Features of Holosun Elite Flagship 2MOA Dot / 65MOA Ring Open Reflex Sight. Parallax free optical design, with unlimited eye relief. Minimized obstruction of vision with push button controls and a streamlined housing design. Shake Awake technology with last setting recall. Internal battery tray design. Solar cell and high capacity battery provide dual power supplies. Titanium-alloyed, shock resistant protective hood. Adaptable to Picatinny and Weaver rails. CNC machined with T6061-T6 housing. Holosun Elite Flagship 2MOA Dot / 65MOA Ring Open Reflex Sight.