The Patented Arisaka Aimpoint Micro Mount Mk2 is specifically engineered for the Aimpoint Micro T1 and T2 optics and is compatible with a wide range of other red-dots using the same footprint, including the Aimpoint H1/H2, Aimpoint Comp M5/M5S, Sig Romeo 4 and 5, Vortex Crossfire and Holosun HS503/515/530. This versatile mount is offered in 1.54 inches, 1.93 inches and 2.26 inches height options. The 1.54 inches height is considered a lower 1/3 co-witness, allowing standard AR-height iron Sights to be visible in the lower third of the red-dot optic lens for easy Sight alignment. The 2.26 inches version is deSigned to pair perfectly with the Unity FAST FTC Magnifier Mount, with AR-height iron Sights visible through the window beneath the optic. Whether you're building a custom setup or looking for the perfect height to enhance your shooting experience, the Arisaka Aimpoint Micro Mount Mk2 provides a secure and adaptable solution for a wide variety of optics.