Let's face it, sometimes things get up close and personal. Having a secondary red dot sighting system mounted in tandem with your Fusion Thermal sight provides a fast and efficient aiming point for close targets. And we've made it easy by designing our thermal optic mounts in conjunction with our friends at UNITY Tactical to be compatible with their FAST(TM) system Offset Optic Base and Offset Adapter Plates, allowing you to mount a secondary red dot right to your thermal optic. When the need arises, simply cant the rifle 35% and rock & roll.