Electronic SightsAmerican Defense ManufacturingSold by Brownells

American Defense Manufacturing

Trijicon Mro Lower 3rd Co-Witness Mounts - Mro Lower 3rd Co-Witness, Tactical Lever, Black

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Trijicon Miniature

Lower 1/3rd Co-Witness height

Precision Machined

From 6061 T6 aluminum

Finished Hard

Hard coat T3 Mil-Spec anodize

Patented Qd

Auto Lock lever system

Compatible Both

Both in-spec and out-of-spec rail

$95.95
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SKU: 100018760

Overview

Designed for the Trijicon Miniature Rifle Optic, this mount positions the optic at a Lower 1/3 co-witness height for a streamlined sight setup. It is built from 6061 T6 aluminum with a hard coat T3 Mil-Spec anodized finish, and it uses the Patented QD Auto Lock lever system for mounting flexibility across both in-spec and out-of-spec rail systems. The Tactical Lever includes an extended thumb pad for easier handling during setup or removal. For hunters and shooters who want a secure optic mount with quick-detach convenience, it offers a practical option without unnecessary bulk.

Why Hunters Choose the American Defense Manufacturing

Trijicon Miniature

Rifle Optic Lower 1/3rd co-witness

Precision Machined

From 6061 T6 aluminum

Hard Coat

T3 Mil-Spec anodized finish

Patented Qd

Auto Lock lever system

Accommodates Both

In-spec and out-of-spec rail systems

Key Features

  • Designed for the Trijicon Miniature Rifle Optic with Lower 1/3rd Co-Witness height
  • Precision machined from 6061 T6 aluminum
  • Finished with hard coat T3 Mil-Spec anodize
  • Features the patented QD Auto Lock lever system
  • Compatible with both in-spec and out-of-spec rail systems
  • Tactical lever includes an extended thumb pad

Best Used For

  • Hunters using a Trijicon MRO who want a Lower 1/3rd co-witness setup on a rifle rail.
  • Users needing a quick-detach mount with the Patented QD Auto Lock lever system.
  • Shooters working with in-spec or out-of-spec rail systems and needing broader fit tolerance.
  • Rifle owners who prefer an extended thumb pad for easier lever operation.
  • Those seeking a precision-machined aluminum optic mount with a hard coat anodized finish.

Specifications

Blade Finishhard coat T3 Mil-Spec anodize
Co Witness HeightLower 1/3rd Co-Witness
ColorBlack
Lever StyleTactical Levers with extended thumb pad
Lever SystemPatented QD Auto Lock(TM) Lever system
Material6061 T6 aluminum
Optic CompatibilityTrijicon Miniature Rifle Optic
Rail Compatibilityin spec and out of spec rail systems

Pros

  • Designed for Trijicon Miniature Rifle Optic Lower 1/3rd co-witness height
  • Precision machined from 6061 T6 aluminum
  • Hard coat T3 Mil-Spec anodized finish
  • Patented QD Auto Lock lever system
  • Accommodates both in-spec and out-of-spec rail systems
  • Tactical lever includes an extended thumb pad

Considerations & Trade-offs

  • This mount is specific to the Trijicon Miniature Rifle Optic and a Lower 1/3rd Co-Witness setup, so it is not a universal fit for other optics or height preferences.
  • The QD Auto Lock lever is designed to work with both in-spec and out-of-spec rail systems, but rail variation can still affect how the mount interfaces and feels in use.
  • The tactical lever includes an extended thumb pad, which can be convenient for quick adjustments but adds a more prominent control surface than a minimal-lever design.
  • Its hard coat T3 Mil-Spec anodize and 6061 T6 aluminum construction are material and finish details, but they do not by themselves indicate compatibility with every rifle setup or accessory layout.

Suggested Comparisons

  • Optic mounts
  • Quick-detach mounting systems
  • Rifle optic accessories

Suggested Accessories

  • Optic lens cleaning kit
  • Rifle sling
  • Protective optic cover
  • Rail-mounted backup sight

Frequently Asked Questions

What optic is this mount designed for?

It is designed for the Trijicon Miniature Rifle Optic (MRO).

What co-witness height does this mount provide?

The mount places the optic in a Lower 1/3rd Co-Witness height.

What material and finish are listed for the mount?

It is precision machined from 6061 T6 aluminum and finished in a hard coat T3 Mil-Spec anodize.

Does this mount use a quick-detach lever system?

Yes. It features the Patented QD Auto Lock(TM) Lever system.

Will it work with all rail systems?

The description says it is designed to accommodate both in spec and out of spec rail systems, but no further compatibility details are provided.