Designed for rifles, shotguns, and other long gun applications, this HE510C Reflex Sight in a flat dark earth housing from Holosun features a green circle-dot reticle and a multicoated lens for clear and unobstructed targeting at close and long ranges. Built with an aluminum housing and a grade 5 titanium hood, the sight comes with a QD absolute co-witness mount with a 1.4" dot height for added compatibility. The multiple reticle system has three options: a 2 MOA dot, a 65 MOA circle, and a combined reticle. The sight's green Super LED is powered by a CR2032 battery, providing 12 brightness levels including two night-vision settings, and delivering 50,000 hours of battery life. The battery is backed up by Holosun's Solar Failsafe technology, which uses solar power to keep the sight working after the battery fails. Optical Performance Unlimited eye relief when using both-eyes-open shooting techniques allows for complete situational awareness Multiple layers of antireflective coating on all optics ensure bright and clear views through the sight window Reticle Details 65 MOA aiming circle for distance shooting 2 MOA aiming dot for closer range targets 1.63" dot height with included lower 1/3 co-witness mount 12 brightness settings, including two suitable for night vision gear Solar FailSafe technology prevents reticle failure with battery back-up Shake Awake technology with last setting recall Use and Handling 1 MOA adjustment per click impact point correction +/- 30 MOA windage and elevation adjustments Lock Mode prevents settings from unwanted adjustment Construction Details Durable aluminum housing with a titanium hood for added shock resistance IP67-rated shock, fog, and waterproof Included absolute co-witness QD mount Runs up 50,000 hours on one included CR1632 battery