The Unity Tactical FAST is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. The FAST COG Series Mounts were developed to work with all Trijicon ACOG and VCOG series optics. It raises the optical centerline to 2.05"" above the rail for faster/easier sight pictures. These scopes come from the factory with a low mount that can impede stock weld and sight pictures while wearing plate carriers, helmets, and communication headsets. The taller FAST mount is a drop-in replacement for the OEm device and greatly aids in rapid threat engagement. The FAST COG Series Mounts are also compatible with the entire FAST Offset Mfg: Unity Tactical