MBUS Is UNMATCHED. You can't buy better back-up sights.
This guide details the installation and adjustment of Magpul MBUS Pro and MBUS 3 backup sights. It covers mounting on a Picatinny rail, tool-less elevation and windage adjustments, and emphasizes safety during the process. The video highlights the low-profile nature of the MBUS Pro and the spring-loaded deployment of the MBUS 3.












