Trijicon MRO 1/3 Co-witness Picatinny Mount

• Lower 1/3 co-witness height: Raises the Trijicon MRO to a height that keeps iron sights in the lower part of the window, giving a less cluttered sight picture while still preserving a usable backup aiming reference.
• Picatinny rail interface: Fits standard Picatinny rails for straightforward installation on a wide range of rifles and carbines, making it a practical choice for AR-style platforms and other rail-equipped firearms.
• Aluminum construction: Keeps the mount light without giving up the rigidity needed to hold the optic securely, which helps maintain handling balance on compact carbines and patrol rifles.
• Slim, fixed design: The low-profile form keeps added bulk to a minimum, so the optic stays compact and snag-free while providing a stable, repeatable mounting position.
• Dedicated MRO footprint: Built specifically for the Trijicon MRO mounting standard, allowing a direct fit for MRO-series sights without extra adapters that add height or complexity.

About the Trijicon Mounts Series

Trijicon Mounts covers a broad range of mounting solutions for the company’s red dot sights and optics accessories. The series includes models for MRO, RMR, and SRO optics, with configurations tailored to different firearms, rail systems, and shooting styles. Rather than treating every optic setup the same, the range is organized around practical mounting needs such as low, full co-witness, and lower one-third co-witness heights.

Within the series, some mounts are designed for standard Picatinny or Weaver rails, while others are made for more specialized platforms. Trijicon also offers selected quick-release models with Q-LOC technology, alongside simpler fixed mounts for users who want a straightforward, durable installation. Across the line, the design approach stays focused on secure optic placement, compact dimensions, and compatibility with the intended sight footprint. For red dot users, that matters because mount height and interface choice directly affect cheek weld, backup sight use, and how naturally the optic presents when the rifle is brought on target.

About the Trijicon MRO 1/3 Co-witness Picatinny Mount

The Trijicon MRO 1/3 Co-witness Picatinny Mount is a fixed red dot sight mount built for shooters who want the handling advantages of the lower one-third co-witness setup with a dedicated Trijicon MRO interface. On rifles and carbines with iron sights, this height places the irons low in the optic window instead of through the center, which helps keep the view more open during fast target acquisition while still leaving the sights available as a backup.

The mount attaches to a Picatinny rail, making it suitable for a wide range of modern rifle platforms. Its aluminum construction keeps weight down while providing the stiffness needed for a stable optic base. That combination is especially useful on compact carbines, where unnecessary bulk can affect balance and handling. The mount’s fixed, non-extended design also keeps the optic position simple and consistent, which suits users who prefer a clean setup without moving parts or quick-release levers.

With a mount length of 38.00 mm and a black finish, it stays visually and physically unobtrusive on the rifle. This model is intended for MRO-pattern optics such as the MRO, MRO Patrol, MRO Green Dot, and MRO HD, giving those sights a direct-fit mounting solution for practical tactical optics, defensive carbines, and general-purpose range use.

About Trijicon

Trijicon was founded in 1981 by Glyn Bindon and is based in Wixom, Michigan, United States. The company develops aiming systems for military, law enforcement, hunting, and shooting use, with product lines that include riflescopes, red dot sights, electro-optics, and iron sights. Its name, adopted in 1985, combines “tritium” and “icon,” reflecting the company’s long association with self-luminous and illuminated aiming technology.

Trijicon is particularly known for illumination systems based on tritium, fiber optics, and LED technology. Over time, it introduced several well-known products in the optics market, including the ACOG riflescope in 1987 and the RMR sight in 2009. That background is relevant to mounts and accessories as well, because Trijicon designs its support hardware around the same duty-oriented approach as its optics.

Main Features

• Manufacturer: Trijicon
• Series: Trijicon Mounts
• Made in: USA
• Mount standard: Trijicon MRO
• Mount type: Fixed lower 1/3 co-witness Picatinny mount
• Height: 21.50 mm
• Length: 38.00 mm
• Inclination: 0 MOA
• Windage adjustable: No
• Material: Aluminium
• Color: Black

Warranty

2 years. This mount is covered by a two-year manufacturer warranty.

In the Box

• 1 - Mount
• 4 - Screws
• 1 - Hex Key