Unity Tactical FAST COG Series Mount 2.05" Optical Height ACOG/VCOG Footprints Anodized Finish Black. 05in optical centerline from the rail. The multiple mounting holes provide optimal eye relief with an ACOG depending on the weapon platform. The modular base accepts the FAST Offset Optic Base which allows for mounting a variety of secondary/back-up optics at the same 2.05in height and at a 36 degree angle for rapid transitions. FAST is a series of optic mounting solutions that provides end users with a quicker sight picture than standard height mounts allowing for more rapid visual processing of the battlefield by ensuring an ergonomically correct heads-up posture. Further they provide faster and easier dot/reticle acquisition while wearing night vision goggles protective masks plate carriers and other gear. The FAST COG Series mount comes with a three cross bolt rail clamp. COMPATIBILITY: Trijicon VCOG / ACOG Footprint MOUNT TYPE: 3 Cross Bolt Rail Clamp Specifications for Unity Tactical FAST COG Series Mount: Manufacturer: Unity Tactical Color: Black Finish: Anodized Fabric/Material: 7075-T6 Aluminum Optic Cut: Trijicon ACOG Height: 2.05 in Weight: 3.5 oz Additional Features: ACOG/VCOG Quantity: 1 Package Contents: Unity Tactical FAST COG Series Mount