Magpul put out a video showing how to install the MBUS Offset Sights. According to the company, the MBUS Pro Offset Sights offer a versatile aiming solution for M1913 Picatinny rails, designed to complement magnified optics. As a backup option in case of optic failure or close-range targets, these sights can be rotated 45 degrees to provide a complete iron sight system.