Built for fast target acquisition and rugged reliability, the Holosun AEMS PRO X2 Red Dot Sight offers cutting-edge optics in a compact form. It features a refined optical system, smart AUTO mode, and versatile mounting. Whether you're on the range or in the field, this sight is ready to perform. Multiple Reticle System: 2 MOA dot, 65 MOA circle, or both Advanced optical system reduces parallax by 50% Forward-facing light sensor enhances AUTO mode Solar Failsafe adjusts reticle to light conditions Shake Awake with last setting recall Anti-reflective lens insert included 7075-T6 aluminum housing with MAO finish Lower 1/3 co-witness mount included