WTF are Backup Iron Sights For?

Published on March 16, 2024
Duration: 6:38

Backup iron sights (BUIS) are crucial for long-term field reliability, not just mid-gunfight failures. Optics can fail due to environmental factors like temperature shifts causing internal fogging, or physical impact. Fixed optic mounts can be removed in the field using common tools stored in rifle grips, and offset sights offer faster deployment than QD mounts if immediate backup is needed.

Quick Summary

Backup iron sights (BUIS) are essential for long-term field reliability, not just immediate combat scenarios. Optics can fail due to environmental factors like internal fogging or physical impact. Fixed mounts can be removed in the field, and offset sights offer faster deployment than QD mounts if an optic fails.

Chapters

  1. 00:00The BUIS Misconception
  2. 01:21Field Failures and Logistics
  3. 01:57Environmental and Technical Failures
  4. 02:31Removing Fixed Mounts in the Field
  5. 03:12Offset Sights vs. QD Mounts
  6. 04:04Battery Life and Physical Impact

Frequently Asked Questions

Why are backup iron sights (BUIS) important for firearms?

BUIS are crucial for long-term field reliability, especially when optic replacements or warranty services are unavailable. They provide a secondary sighting system in case of optic failure due to environmental factors, physical damage, or electronic malfunction.

How can optics fail in the field?

Optics can fail from environmental issues like internal fogging caused by temperature shifts and loss of nitrogen purge. Physical impacts, such as dropping a rifle, can also render an optic unusable, making BUIS essential.

Are Quick Detach (QD) mounts the best option for backup sights?

While QD mounts offer convenience, offset iron sights are superior for immediate deployment if an optic fails. QD levers can be difficult to manipulate under stress or with gloves, whereas offset sights require only a simple cant of the rifle.

Can you remove a failed optic in the field?

Yes, most fixed optic mounts use standard fasteners like T15 Torx or cross-bolts. Tools for these are often small enough to be stored in a rifle's pistol grip, allowing for optic removal within minutes.

Related News

All News →

More Tactical & Gear Videos You Might Like

More from Hop

View all →