Magpul - MBUS 3
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.











