Nelahol Flip Up Sights BUIS

Published on June 8, 2022
Duration: 8:08

This guide covers the installation and initial zeroing of Nella Hall flip-up backup iron sights (BUIS) on a Picatinny rail. The process involves using an included Allen wrench to secure the sights and adjusting elevation on the front post and windage on the rear sight. The reviewer notes that approximately 10 rounds may be needed for initial elevation adjustment, and the sights held zero after a box of ammunition.

Quick Summary

Nella Hall flip-up iron sights are a budget-friendly option for backup aiming. They feature standard AR-15 front sight elevation adjustment and dual-aperture rear sights for close to medium-range shooting. Installation is straightforward using an included Allen wrench, and they are designed to hold zero effectively.

Chapters

  1. 00:00Introduction to BUIS
  2. 00:07Generic Flip-Up Sights
  3. 00:23Nella Hall Sights Unboxing
  4. 00:38Sight Construction and Quality
  5. 01:30Front Sight Elevation Adjustment
  6. 01:50Rear Sight Windage and Apertures
  7. 02:07Flip-Up Mechanism and Lock
  8. 02:30Installation on Rifle
  9. 02:47Using BUIS as Primary or Backup
  10. 03:03Importance of Sights for Safety
  11. 03:33Range Testing and Zeroing
  12. 03:44Rear Sight Adjustment Details
  13. 04:08Front Sight Adjustment and Visibility
  14. 04:14Zeroing Process and Performance
  15. 04:38Value and Origin of Sights
  16. 04:54Where to Buy and Final Thoughts

Frequently Asked Questions

What are BUIS and why are they important?

BUIS stands for Backup Iron Sights. They are essential secondary aiming devices that provide a reliable aiming solution if your primary optic (like a red dot or scope) fails due to battery issues, damage, or other malfunctions. They ensure you can still safely and accurately engage targets.

How do you adjust the elevation on a typical AR-15 front sight post?

To adjust the elevation on an AR-15 front sight post, you typically need an AR front sight tool. This tool allows you to press down on a small detent pin while simultaneously rotating the sight post, similar to turning a screw, to raise or lower your point of impact.

What is the difference between the apertures on a rear peep sight?

Rear peep sights often have two apertures. A larger aperture is generally used for close-quarters engagements (CQB) out to about 200 meters, offering a wider field of view. A smaller aperture is preferred for longer-range shooting or when more precision is required, as it helps focus the eye.

How do flip-up iron sights stay in the deployed position?

Flip-up iron sights typically use a detent pin mechanism. When the sight is flipped up, a small spring-loaded pin engages with a notch or detent on the sight's base, locking it securely in place. To fold the sight down, you usually press this detent pin.

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