Trijicon RMR | Overview

Published on September 30, 2023
Duration: 10:07

This guide provides expert-level instruction on mounting and zeroing the Trijicon RMR, a highly proven miniature red dot sight. It covers essential steps from battery installation and proper screw selection to practical zeroing techniques for handguns. The instruction emphasizes real-world considerations like battery life and the importance of checking zero after maintenance, drawing on the instructor's extensive experience.

Quick Summary

The Trijicon RMR is a proven miniature red dot sight, originally for ACOGs but now standard for pistol slides. For handguns, the 3.25 MOA dot is good for general use, while the 1 MOA dot is better for astigmatism. Real-world battery life is about 8-12 months, requiring proactive replacement. Proper mounting requires specific screws and torque, and manual brightness control is preferred over auto mode.

Chapters

  1. 00:00Trijicon RMR Overview & History
  2. 00:47RMR Package Contents & Battery
  3. 01:32Battery Compartment Design Issues
  4. 02:11Included Hardware & Screw Compatibility
  5. 02:42Mounting the RMR to a Handgun (Zev Slide)
  6. 03:58RMR Controls: Brightness Adjustment
  7. 04:48Auto Mode Functionality & Drawbacks
  8. 05:31Manual Brightness Control Preference
  9. 05:37Windage and Elevation Adjustments
  10. 05:54RMR Models: RM06 vs. RM09
  11. 06:32MOA Dot Size Recommendations
  12. 06:41Maintenance: Witness Marks & Battery Tracking
  13. 07:33Real-World Battery Life Expectations
  14. 08:22Checking Zero After Battery Change
  15. 08:42Zeroing Guidelines (10 & 25 Yards)
  16. 09:24Adjustable Models for Night Vision
  17. 09:57Contact T-Rex Arms for Questions

Frequently Asked Questions

What is the recommended MOA dot size for the Trijicon RMR on a handgun?

For general handgun use, a 3.25 MOA dot (like the RMR RM06) is recommended. For individuals with astigmatism, the smaller 1 MOA dot (RMR RM09) provides a sharper aiming point and is preferred.

How do I properly mount the Trijicon RMR to a pistol slide?

Ensure the slide is clean and compatible. Use the correct, often proprietary, mounting screws from the slide manufacturer. Apply blue Loctite to the threads and tighten to the manufacturer's specified torque. Always check the firearm's safety before starting.

What is the typical battery life of a Trijicon RMR?

While manufacturers may claim 2-3 years, real-world battery life for the Trijicon RMR is typically around 8 months to a year, especially at higher brightness settings. Proactive replacement is advised.

Should I use the auto brightness mode on the Trijicon RMR?

The instructor does not recommend using the auto brightness mode on the RMR. It can provide inconsistent brightness control in rapidly changing light conditions, potentially hindering effective aiming. Manual control is preferred for reliability.

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