Unity Tactical Combat Thermal Mount Black. 54in optical centerline from the rail. Using a force-to-overcome mechanism it enables the thermal to flip-to-side. With three models the CTM can be employed for either the Trijicon SkeetIRx Pixels on Target VooDoo-S or the iRay RH25 (models not interchangeable). The model for the VooDoo-S can be mounted for both right-and left-handed flip-to-side options. Mounted in front of a compatible weapons optic CTM mounts directly to an M1913 rail. It comes standard with a FAST QD Lever allowing the thermal to be used as an HHI (hand held imager) with quick detachment and reattachment while maintaining optic co-alignment. When mounted on a FAST Accessory Riser the CTM brings the thermal up to the established FAST height of 2.26in to allow pairing with any FAST mount and optic combination. It also brings a thermal up to 2.05in when mounted on a FAST Thermal Riser. Specifications for Unity Tactical Combat Thermal Mount: Manufacturer: Unity Tactical Color: Black Finish: Anodized Features of Unity Tactical Combat Thermal Mount: Mounts Directly to M1913 Rail Package Contents: Unity Tactical Combat Thermal Mount Unity Tactical OM-TMRB: Combat Thermal Mount Black