Unity Tactical released a new batch of mounts and one of these is the FAST Absolute Riser... "FAST™ is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. The FAST™ Absolute Riser creates a 2.26” optical center-line from the rail when paired with an absolute co-witness rail mounted sight. It provides a more neutral posture and faster, easier dot/reticle acquisition while wearing night vision goggles, a protective mask, plate carriers and other gear.
FAST™ mounts allow for more rapid visual processing of the battlefield by promoting aheads-up posture. The FAST™ Absolute Riser can also be fitted with a Quick Detach Lever."