Final Hours To Save Up to 30%! Shop Now

AT3 Tactical RCO Riser Mount for Trijicon MRO Pattern Optics

SKU: AT3-RCO-RM

Out of Stock

Get 20% off AT3 Optics, Handguards, and Everything STNGR for our SHOT Sale!

Join the waitlist to be emailed when this product becomes available

Orders will Ship within 1 Business Day
Backed by the AT3 Lifetime Warranty!
TOP ADD-ON'S
NCSTAR .223 Remington Laser Bore Sight - AT3 Tactical

NCSTAR .223 Remington Laser Bore Sight

$19.99

Cantilever Riser Mount for Trijicon MRO – Absolute or Lower 1/3 Cowitness

The iconic Trijicon MRO comes in many configurations – not all of them optimized for the AR-15.  The AT3 RCO Riser mount makes it simple to get the height you need, whether you want to set up for absolute or lower 1/3 cowitness.  This is a complete kit, featuring a cantilever riser mount, a height spacer, all necessary screws, and a Torx wrench so you can optimize your MRO.

The RCO mount makes both your optic and rifle look better

Light on Weight, High on Value

A cantilever riser mount offers extra benefits for usability over standard, block-style risers.  The forward angle pushes the MRO red dot further from your eye, aiding on focusing your vision down the sight tube, making target acquisition simpler.  The skeletonized design is durable, lightweight, and modular, all at a price well below most other aftermarket options.  Plus, it’s backed by the AT3 Lifetime Warranty.

How to Install

  1. Remove any existing mount on your Trijicon MRO by removing the four screws at the bottom of the mount
  2. Choose your desired configuration for the RCO riser mount
    • For Absolute Cowitness, use the RCO riser mount and the four supplied short screws (4-48 x 3/16″)
    • For Lower 1/3 Cowitness, use the RCO riser mount with the supplied spacer and four long screws (4-48 x 5/16″)
  3. With the RCO riser mount angled towards front of your MRO, install the mount to the optic with the supplied screws
    • We highly recommend using a small drop of Blue Loctite, or equivalent medium-strength threadlocker on each screw prior to installation
  4. Now that the mount is attached, install your MRO onto your rifle, tightening the large screw to 20 inch-lbs.
    • Again, a small drop of Blue Loctite or equivalent threadlocker on the large screw is recommended prior to installation

Red dot sight is not included.

Specifications

  • Material: 6061-T6 Aluminum
  • Finish: Hardcoat anodizing
  • Fit: MRO Pattern Optics
  • Mounts to: Picatinny Rails
  • Weight: 1.1 oz
  • Includes
    • Torx Wrench
    • 4-48 x 3/16″ Screws (x4)
    • 4-48 x 5/16″ Screws (x4)

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

AT3 Lifetime Warranty Logo

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.

This includes AT3 Red Dot SightsHandguardsIron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.

In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.

If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.

If your product is in need of warranty service, please contact AT3 Tactical to start the process

Our contact info is available here. To expedite processing, please provide your order information and description of the defect.

Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.

Customers who viewed this item also viewed these products

UTG MRO Lightweight Red Dot Mount

UTG Super Slim Lightweight Trijicon MRO Red Dot Mount

(no reviews yet)
$19.97
UTG Super Slim Picatinny MRO Red Dot Mount – Multiple Heights Light and adaptable
Midwest Industries Trijicon MRO Quick Detach Riser Mount - AT3 Tactical

Midwest Industries Trijicon MRO Quick Detach Riser Mount

(no reviews yet)
$90.00
QD Red Dot Riser Mount for Trijicon MRO and AT3 RCO Sights Midwest Industries
American Defense MFG AD-MRO Lightweight QD Red Dot Mount

American Defense MFG AD-MRO Lightweight QD Red Dot Mount

(no reviews yet)
$107.83
American Defense MFG AD-MRO Lightweight Red Dot Mount The ADM AD-MRO Lightweight mount cuts
UTG Super Slim Picatinny RMR Red Dot Mount

UTG Super Slim Picatinny Trijicon RMR Red Dot Mount

(no reviews yet)
UTG Super Slim Picatinny RMR Red Dot Mount – Multiple Heights When weight savings
Reptilia 1.93" Trijicon MRO Red Dot Mount - AT3 Tactical

Reptilia 1.93" Trijicon MRO Red Dot Mount

(no reviews yet)
$98.96
1.93″ MRO Red Dot Mount The 1.93″ DOT Mount™ by Reptilia is a lightweight,
Midwest Industries Aimpoint T1/T2 Compatible Riser Mount - AT3 Tactical

Midwest Industries Aimpoint T1/T2 Compatible Riser Mount

$73.95
Aimpoint Micro Mount for Professional Applications No matter what riser height you might need
Unity Tactical FAST Optics Riser for Lower 1/3 Cowitness Optics - AT3 Tactical

Unity Tactical FAST Optics Riser for Lower 1/3 Cowitness Optics

$90.00
Unity Riser Mount for EOTech EXPS3 and More This riser from Unity Tactical comes
UTG RDM20 Absolute Cowitness Riser Mount for Fastfire Pattern Red Dot Sights

UTG® Super Slim RDM20 Mount - Absolute Cowitness Mount for...

$12.97
Secure Absolute Cowitness Mount for Red Dot Sights UTG offers an ultra-secure mounting platform
Midwest Industries Trijicon MRO Riser Mount - AT3 Tactical

Midwest Industries Trijicon MRO Riser Mount

(no reviews yet)
$64.95
Rock-Solid, Low-Weight, Duty-Ready MRO Riser Mount Midwest Industries brings their expertise to the table
Midwest Industries Kel-Tec Sub 2000 Mount for Aimpoint Micro Pattern Optics - AT3 Tactical

Midwest Industries Kel-Tec Sub 2000 Mount for Aimpoint Micro Pattern...

(no reviews yet)
$104.95
Midwest Industries Pivoting Optic Mount for Kel-Tec Sub2000 Maximize your Kel-Tec Sub2000’s potential with

STNGR Quick Detach T1/T2 Lower 1/3 Co-Witness Mount

(no reviews yet)
$55.00$44.00
STNGR Quick Detach T1/T2 Lower 1/3 Co-Witness Mount This QD mount by STNGR attaches
American Defense MFG AD-T1 QD Red Dot Mount

American Defense MFG AD-T1 QD Red Dot Mount

(no reviews yet)
American Defense MFG AD-T1 Red Dot Mount Precisely machined with a QD lever, the
American Defense MFG AD-RMR QD Red Dot Mount

American Defense MFG AD-RMR QD Red Dot Mount

(no reviews yet)
ADM AD-RMR QD Red Dot Mount When all you need is a red dot

American Defense Mfg. AD-RMR QD Mount - 1.93" Height

(no reviews yet)
$115.86
American Defense Mfg. AD-RMR QD Mount – 1.93″ Co-Witness Height for RMR The AD-RMR-LW-H
Reptilia 1.93" Aimpoint Micro Red Dot Mount - AT3 Tactical

Reptilia 1.93" Aimpoint Micro Red Dot Mount

(no reviews yet)
$98.96
1.93″ Aimpoint Micro Red Dot Mount The 1.93 DOT Mount by Reptilia is a

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...