This listing is for one (1) FACTORY NEW Holosun HE510C-GR Elite Green LED Aluminum Reflex Sight - Black. The HE510C-GR is an open reflex optical sight designed for rifle and carbine applications. Features include Holosun’s Green Super LED with up to 50k hours battery life, Multi-Reticle System, Solar Failsafe, and Shake Awake. The HE510C-GR Elite is Holosun’s flagship Open Reflex optic. Equipped with Holosun's highly efficient green reticle, the HE510C-GR Elite has an open frame for a wide sight picture. The HS510C Elite is powered by Holosun's, “Advanced Super Solar Technology” as well as, a CR2032 battery. Utilizing the multi-reticle system (MRS) this unit features three reticle choices. The HE510C-GR can be switched between a 65 MOA circle with 2 MOA dot, a 2 MOA dot only, or a 65 MOA ring only, all at the push of a button. This optic is protected by a titanium-alloyed hood. Features: Multiple Reticle System featuring three green reticles Parallax free optical design with unlimited eye relief? Minimized obstruction of vision with push button controls and a streamlined housing design Shake Awake Technology 32mm×24mm open lens. Solar cell and high capacity battery provide dual power supplies Titanium-alloyed, shock resistant protective hood Quick detach mount for standard picatinny or weaver rails CNC machined with T6061-T6 housing In the Box: Absolute Cowitness QD Mount T10 L Key User Manual Lens Cloth CR2032 Battery