May 2020 Q&A

Published on May 20, 2020
Duration: 45:39

The video discusses the preference for lower 1/3 co-witness sights when using red dot optics on firearms. This setup allows the backup iron sights to be visible but not obstructive to the red dot's field of view, offering a less cluttered sight picture. It's also noted that this height is often compatible with night vision mounting gear.

Quick Summary

For firearms with red dot sights, a lower 1/3 co-witness for backup iron sights is generally preferred. This setup ensures the iron sights are visible but do not significantly obstruct the red dot's field of view, offering a less cluttered sight picture and often aligning with night vision mounting heights.

Chapters

  1. 00:21Co-Witness Sights for Red Dots
  2. 00:26Preference for Lower 1/3 Co-Witness
  3. 00:34Simplest Sight Picture is Best
  4. 00:45Lower 1/3 vs. Full Co-Witness
  5. 00:59Night Vision Mounting Height
  6. 01:05Optics Requiring Co-Witness
  7. 01:21Recommendation: Lower 1/3 Co-Witness

Frequently Asked Questions

What is the best co-witness height for red dot sights on a firearm?

The preferred co-witness height for red dot sights on a firearm is typically a lower 1/3 co-witness. This setup allows the backup iron sights to be visible but not obstructive to the red dot's field of view, providing a less cluttered sight picture.

Why is a lower 1/3 co-witness preferred over a full co-witness?

A lower 1/3 co-witness is preferred because it does not obviate the field of view as much as a full co-witness. This allows the shooter to more easily ignore the backup iron sights when using the red dot, leading to a simpler and more effective sight picture.

What type of optics are typically used with co-witnessed iron sights?

Co-witnessed iron sights are primarily relevant for red dot sights and holographic sights. Other optics like prismatic sights or 1x low power variable optics (LPVOs) are generally not designed to be used with co-witnessed iron sights.

Does the height of co-witness sights affect night vision compatibility?

Yes, the height used for a lower 1/3 co-witness is often the same height required for mounting night vision gear. This makes it a practical choice for users who may switch between red dot aiming and night vision operations.

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