The Unity Tactical FAST Thermal Riser (Unity Tactical part no. FST-TRB) brings a thermal optic up to a 2.05-inch optical centerline when mounted on a Unity CTM mount. It can also raise a thermal running an OEM 1.54-inch clip-on mount up to that same 2.05-inch height, giving a shooter a consistent cheek weld whether they’re running a thermal alone or stacked in front of a primary optic. Unity Tactical builds the riser as part of its broader FAST mounting ecosystem, engineered for repeatable return-to-zero performance. It’s a natural pickup for shooters running a clip-on thermal who need the correct height to co-witness or stack properly with existing glass.

Key Specifications

• Raises a thermal optic to a 2.05-inch optical centerline when mounted on a Unity CTM.
• Compatible with OEM 1.54-inch clip-on mounts, raising them to the same 2.05-inch height.
• Finished in black to match a standard rifle build.
• Part of Unity Tactical’s FAST mounting system.

Frequently Asked Questions

What height does this riser provide? It brings a thermal optic to a 2.05-inch optical centerline on a Unity CTM mount.

Does this work with a clip-on thermal? Yes, it also raises OEM 1.54-inch clip-on mounts to that same 2.05-inch height.

Buy the Unity Tactical FAST Thermal Riser, Black

Dial in the correct thermal height for a clean cheek weld with this Unity Tactical riser. Browse our full scope mounts selection and order from our Lubbock, Texas gun shop for fast, direct shipping.