Red Dots & Height Over Bore

Published on November 15, 2023
Duration: 1:00

This guide details the evolution of red dot optic mounting systems on AR-15 platforms, from early carry handle mounts to modern night vision-compatible setups. It covers lower third co-witness and high riser configurations, emphasizing adaptability for various tactical applications. The information is presented with an expert, authoritative tone, reflecting deep knowledge of firearm accessory development.

Quick Summary

The evolution of AR-15 red dot mounting includes early carry handle setups, lower third co-witness mounts for backup sights, and modern high riser systems often paired with magnifiers for night vision (NODs) compatibility. Understanding height over bore is key for accurate aiming across these configurations.

Chapters

  1. 00:00Introduction to Height Over Bore
  2. 00:07Historical Carry Handle Mounts
  3. 00:13Lower Third Co-Witness
  4. 00:23High Risers and Magnifiers
  5. 00:40Modern Night Vision Setups

Frequently Asked Questions

What is the evolution of red dot mounting systems on AR-15s?

AR-15 red dot mounting has evolved from early high carry handle mounts to lower third co-witness setups, and now to high riser mounts often paired with magnifiers for night vision compatibility.

How does height over bore affect aiming with red dots?

Height over bore is the distance between the optic's line of sight and the barrel's bore. Understanding this measurement is crucial for accurate aiming, especially at close ranges, to compensate for bullet trajectory.

What is a lower third co-witness mount?

A lower third co-witness mount positions the red dot optic so that the iron sights appear in the lower third of the optic's view, providing a backup sighting solution without obstructing the primary red dot.

Why are red dots mounted on top of magnifiers for night vision?

Mounting red dots on top of magnifiers allows shooters to use their night vision goggles (NODs) effectively. The magnifier provides magnification, while the top-mounted red dot offers a quick aiming point compatible with the NODs.

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