Designed for rifles, shotguns, and other long gun applications, this AEMS Advanced Enclosed Micro Sight from Holosun features a red circle-dot reticle and a multicoated, extra-large lens for clear and unobstructed targeting with an increased field of view. Built with a 7075 T6 aluminum housing, the sight comes with a lower 1/3 co-witness Picatinny mount with a 1.63" 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 red Super LED is powered by a CR2032 battery, providing 12 brightness levels including four 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 if the battery fails.