The Unity Tactical FAST MicroPrism mounts have been designed for the PA MicroPrism and built with the purpose of fast target and reticle acquisition thanks to their 2.26" optical centerline. This taller mount allows an ergonomic heads-up shooting position, offering better awareness down range as well as improving the speed with which you can acquire a sight picture. The FAST mounts provide faster and easier sight acquisition when using night vision, over-sized hearing protection, or other headsets and gear that can interfere with a standard cheek weld.