Magpul - MBUS 3

Published on January 11, 2021
Duration: 1:21

This guide details the installation and adjustment of the Magpul MBUS 3 backup sights. It covers ensuring firearm safety, mounting the front and rear sights on a Picatinny rail, and utilizing the tool-less, spring-loaded, ambidextrous deployment system. Specific instructions are provided for adjusting the dual-width front post and the rapid-select aperture rear sight for optimal aiming in various conditions.

Quick Summary

The Magpul MBUS 3 sights are designed for rapid deployment via an ambidextrous push-button and feature tool-less adjustments for both elevation (front post) and windage (rear sight). Constructed from impact-resistant polymer, they offer a low profile when folded and incorporate a dual-width front post and a rapid-select aperture system for versatility.

Chapters

  1. 00:00Magpul Backup Sight Legacy
  2. 00:24Introduction of MBUS 3
  3. 00:43Physical Specifications and Deployment
  4. 01:02Sight Features and Adjustments

Frequently Asked Questions

How do you deploy the Magpul MBUS 3 sights?

The Magpul MBUS 3 sights feature a spring-loaded, ambidextrous push-button deployment mechanism. Simply press the button on either side of the sight, and it will spring up to its ready-to-use position.

Are the Magpul MBUS 3 sights adjustable without tools?

Yes, the Magpul MBUS 3 sights are designed with tool-less adjustments. Both the front sight post for elevation and the rear sight for windage can be adjusted using integrated knobs.

What are the key features of the Magpul MBUS 3?

The MBUS 3 offers a low profile when folded, ambidextrous push-button deployment, tool-less adjustments, a dual-width front sight post, and a rapid-select aperture system on the rear sight, all constructed from impact-resistant polymer.

How do the MBUS 3 sights compare to previous Magpul backup sights?

The MBUS 3 builds upon the legacy of Magpul's backup sights, combining the durable polymer construction of the original MBUS with enhanced features and a more compact design, evolving from both the MBUS and MBUS Pro lines.

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