Unity Tactical FAST COG Series Mount


Flat Dark Earth (FDE)

Product Description

The FAST™ COG Series Mount was developed to universally accept the Trijicon Combat Optical Gunsight double and triple screw interfaces. It covers both ACOG and VCOG series scopes, placing the optical centerline at 2.05″ above the rail. These scopes are heavily used by military and law enforcement entities who often wear plate carriers, helmets, headsets, and gas masks. This type of gear makes acquiring rapid sight pictures a challenge when using the factory absolute co-witness height mounts. The added height of the FAST COG Series Mount greatly increases threat engagement speed and accuracy under stress while wearing gear.

It also features the FAST™ offset accessory mounting interface. A forward and rear interface allows users to choose their desired placement of an offset Miniature Red Dot Sight (MRDS). These types of sights are often paired with ACOG’s and VCOG’s due to their fixed magnification. The FAST Offset Accessory Suite is a modular series of parts that allow users to choose their preferred MRDS and place it at 2.05″ above the rail at a 35-degree angle. This placement allows for rapid transitions.

FAST™ is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. It provides faster/easier reticle acquisition while wearing armor, electronic ear-pro/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 heavy gear.

The FAST™ COG Series Mount comes with a standard rail-grabber clamp with three cross bolts.


  • Dimensions: 3.65″(L) x 1.22″(W) x 1.05″(H)
  • Weight: 2.9 oz.
  • Material: 7075-T6 Aluminum
  • Coating: Type III Hardcoat Anodized
  • Mounting Type: Rail Grabber




Technical Information


7075 Aluminum



Mounting Platform

Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit www.P65Warnings.ca.gov

Customer Reviews

Based on 2 reviews
Fantastic ACOG mount

Ahhh, another shade of FDE for my collection.. 9.5/10

Great mount, perfect height for someone who feels the flat top mount is too low but carry-handle mount too high. Solid and streamlined

I was able to get the mount further rearward on the rail, 1 position closer to eye than the original. The offset is really well implemented if you like the pros/cons. But for NV, Piggybacked RMR is damn near MY perfect height for NODS stuff. Being able to try a setup like this is advisable to find what's best for yourself.

Ryan W.
Wish it was designed different

Milspec is always awesome with shipping and getting orders to you in great time! 5 out of 5 for Milspec retail! The mount itself could have been designed a little better. The fit and finish was perfect. However if you choose to mount the optic in the center position, you will lose a slot or two worth of eye relief as doesn't sit as far back as the stock mount. So if you are looking for any improvement in eye relief, you have to mount the optic towards the rear of the mount. If you do this however, it leaves the front mounting hole exposed. The mount is hollow, so if you are playing in dirt, sand, water, etc, there's a possibility you can get debris inside the mount. Probably a non-issue for most people, but I didn't like the idea of it. Sold it and went the KRAM spacer route.