The History of #Optic Height is a Flat Circle

Published on September 16, 2023
Duration: 1:00

This video discusses the evolution of optic height on AR-15 platforms, noting a trend towards taller mounts over time. It lists specific optic heights in inches, including Absolute Co-Witness (1.42"), Lower 1/3 Co-Witness (1.57"), Unity FAST (2.26"), Raid Works RSR (2.76"), and GBRS Hydra (2.91"). The speaker observes that as time progresses, optic mounts have become taller, correlating with changes in shooting stances.

Quick Summary

The evolution of optic height on AR-15 platforms shows a trend towards taller mounts, with specific heights including Absolute Co-Witness (1.42"), Lower 1/3 Co-Witness (1.57"), Unity FAST (2.26"), Raid Works RSR (2.76"), and GBRS Hydra (2.91"). This shift is associated with changes in shooting stances.

Chapters

  1. 00:00Optic Height Measurements
  2. 00:10Absolute vs. Lower 1/3 Co-Witness
  3. 00:15Unity FAST Mount Height
  4. 00:20Raid Works RSR Mount Height
  5. 00:24GBRS Hydra Mount Height
  6. 00:34Optic Height Timeline
  7. 00:41Evolution of Shooting Stance

Frequently Asked Questions

What are the common optic heights for AR-15 rifles?

Common optic heights include Absolute Co-Witness at 1.42 inches, Lower 1/3 Co-Witness at 1.57 inches, Unity FAST at 2.26 inches, Raid Works RSR at 2.76 inches, and GBRS Hydra at 2.91 inches. These measurements are typically to the centerline of the optic.

How has optic height evolved on AR-15 platforms?

Optic mounting on AR-15s has seen a trend towards taller mounts over time. This evolution is often linked to changes in preferred shooting stances, moving from more hunched-over positions to a more upright posture.

What is the difference between Absolute and Lower 1/3 Co-Witness?

Absolute Co-Witness means your iron sights perfectly align with the red dot in the optic. Lower 1/3 Co-Witness places the iron sights in the lower portion of the optic's view, allowing the red dot to be the primary aiming point.

More Tactical & Gear Videos You Might Like

More from REDACTED Culture Cast

View all →