Ultimate Guide: Mounting a RED DOT Optic on Your Trijicon ACOG!

Published on November 7, 2025
Duration: 0:49

This guide details the installation of a top-mounted red dot optic, specifically an Aimpoint Micro H2, onto a Trijicon ACOG TA02 using the Arisaka T-Rex Arms Micro Mount. It covers the benefits of forward mounting for night vision and improved field of view, along with precise torque specifications for both the optic-to-mount and mount-to-ACOG screws. The process emphasizes an X-pattern tightening method for even tension and level mounting, resulting in a heads-up shooting position.

Quick Summary

Mounting a red dot optic forward on a Trijicon ACOG enhances night vision passive aiming and improves field of view. Use the Arisaka T-Rex Arms Micro Mount, torquing optic screws to 12 inch-pounds and mount screws to 15 inch-pounds in an X-pattern for even tension.

Chapters

  1. 00:00Introduction & Mount Overview
  2. 00:08Benefits of Forward Mounting
  3. 00:11Micro Mount Details & Assembly
  4. 00:19Optic Screw Tightening & Torque
  5. 00:27Preparing ACOG for Mounting
  6. 00:30Attaching Mount to ACOG
  7. 00:34Final Mount Tightening & Torque
  8. 00:40Mounted Optic Dimensions
  9. 00:44Shooting Position & Optic Transition

Frequently Asked Questions

What are the benefits of mounting a red dot sight forward on a Trijicon ACOG?

Forward mounting a red dot on an ACOG improves passive aiming capabilities for night vision devices and enhances the overall field of view, allowing for quicker target acquisition and better situational awareness.

What are the correct torque specifications for mounting an Aimpoint Micro H2 on an Arisaka T-Rex Arms Micro Mount?

When attaching the Aimpoint Micro H2 to the Arisaka T-Rex Arms Micro Mount, tighten the optic screws to 12 inch-pounds. For mounting the Micro Mount assembly to the ACOG, torque the screws to 15 inch-pounds.

What is the height over bore for a Trijicon ACOG with a top-mounted red dot?

With a top-mounted red dot like an Aimpoint Micro H2 on a Trijicon ACOG, the height over bore is approximately 4.125 inches from the centerline of the red dot to the centerline of the rifle's bore.

Should I use thread locker when mounting an Aimpoint optic?

Aimpoint specifically advises against using thread locker on their optic screws. It's recommended to tighten them to the specified torque or hand-tight until the screw stops moving to ensure proper installation.

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