The ARMASPEC ELEV8 iBEAM Series Optic Risers offers a secure and precise solution for lifting holographic and optics that are mounted directly on a Picatinny rail with a standard lower 1/3 co-witness mount. It raises these optics to a precise height, positioning the optical center line at 2.26 inches above the rail. This aids the shooter in many diffrent areas, Including shooting passively with Night Vision or shooting with a gas mask. It also helps get the sight in in line with the shooters vision, speeding up time on target. This elevation provides a solid platform, making it convenient to directly attach optics, including those designed for lower 1/3 co-witness configurations, such as the EOTech EXPS and Vortex UH-1, and many other optic choices out on the market. Features13 Slot Picatinny MountAluminum