HOLOSUN HE510C-GR Holosun HE510C-GR Elite green open reflex sight with a wide sight picture, parallax-free design, and unlimited eye relief. It offers a multiple reticle system with a 65 MOA circle and 2 MOA dot, 2 MOA dot only, or 65 MOA ring only, plus solar power, a CR2032 battery, Shake Awake technology, and a [...]