The Unity Tactical FAST Accessory Riser is a versatile tool that raises a variety of optics, thermals and lasers to give you a heads-up posture.Featuring a machined slot for cable routing, it is primarily designed to raise a rail-mounted laser by 0.725". Covering only three slots on an M1913 Rail, it creates a 2.26" optical centerline from the rail when paired with the Sig Sauer ROMEO8T or the Leupold LCO. It also brings the Trijicon SkeetIRx or the Pixels on Target VooDoo-S to a 2.26" optical centerline when those thermals are mounted on a UNITY CTM. It comes standard with a 2 cross bolt rail clamp.