Unity Tactical FAST Optic Riser
FAST™ is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts.
A 2.26” optical centerline height provides faster/easier reticle acquisition while wearing electronic earpro/communications headsets, night vision goggles and gas masks and allows for more rapid visual processing of the battlefield by promoting a heads-up posture. A heads-up posture also helps users maintain a neutral spine position which is more comfortable while wearing helmets, plate carriers, and other heavy gear.
FAST™ Riser securely elevates block-type red dot optics with a standard lower 1/3 cowitness picatinny mount to a 2.26″ optical center line. FAST™ Riser provides an elevated M1913 Picatinny platform for direct attachment of optics such as EOTech EXPS®, Leupold LCO®, Vortex UH-1®, and other “lower 1/3” optics*.
*Technically, the FAST™ Riser will support “absolute cowitness” optics such as EOTech XPS®, Sig Sauer Romeo8H®, etc. But, compatibility with the FAST™ FTC Magnifier Mount will be limited.
The FAST™ Riser comes standard with a rail-grabber clamp. A Flip-Up Offset Backup Rear Iron Sight module can be purchased separately. This feature will provide fast-transition BUIS capability to the FAST™ Riser. The Offset Rear Iron Sight Module is 100% compatible with existing Offset Front Sights such as those available from MAGPUL, Dueck Defense, Midwest Industries, and Knights Armament Company.
The FAST™ Riser is built from 7075-T6 Aluminum and Type III Hardcoat Anodized Black or FDE*.
Specifications
Height: 2.26″ to optic centerline
Material: Aluminum
Finish: Black or FDE





EDP (verified owner) –
Great for my Eotech EXPS2-0GRN! Rooftop has the best customer service of anyone out there…nice note and a pack of Top Ramen with my Unity Riser was cool.
J.Slater (verified owner) –
I’ve got a T-2 on a FAST mount on one of my rifles but run a Aimpoint 3x in a LaRue lower 1/3 mount on my work gun and wanted to be able to swap it between them…this works perfectly for that. Good stuff.
JSlater (verified owner) –
Have a T-2 on a FAST mount but everything else I have (for now) is on LaRue lower 1/3 mounts. I like to run a 3x behind my dots and this riser works perfectly to get a lower 1/3 up to the correct height to do so. Good stuff.
David (verified owner) –
The product is excellent, and the service from rooftop is unbelievable! I’ll be using them again in the future and can’t recommend them enough!
Weston B. (verified owner) –
My 5 star review is more for rooftop then it is for the product which is also excellent and I have no issues with and is what I expected. But the service from rooftop was over the top fast email responses, fast shipping, same day in fact. And a free meal! Thanks guys!