The Holosun HE510C-GR Elite is Holosun's flagship Open Reflex optic. Now 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 their Advanced Super Solar Technology as well as, a CR2032 battery. Utilizing our 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. Multiple Reticle System featuring three 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 Internal battery tray design 32mm x 24mm open lens. Solar cell and high capacity battery provide dual power supplies Titanium-alloyed, shock resistant protective hood Quick release mount CNC machined with T6061-T6 housing