Compact-sized open green dot sight made by Holosun. CNC machined from 6061-T6 aluminum alloy oxidized with matte black coating, this compact-sized sight weighs 210g and has dimensions of 84x65x40mm. An IP67 rating makes it water and dust resistant as well as shock-proof. The additional titanium outer cover makes the sight robust and resilient to damage. The 32x24mm lens glass is covered in anti-scratch and reflection multi-coating. 2 MOA-sized green dot with a 65-sized circle and a 1/2 MOA adjustment value is available. An LED provides two NV modes and ten brightness levels. With less than 1 MOA parallax, unlimited eye relief, 40 MOA of windage, and elevation regulation, HE510C-GR guarantees quick and accurate target acquisition in all weather and light conditions. The power is provided by a single CR2032 battery in a screw-secured tray giving it a running time of 50000 hours at a medium dot brightness setting. It also features rubberized controls and a "Shake Awake" system that helps conserve the battery. The set includes a spare battery tray, cleaning cloth, and installation keys.