Magpul MBUS 3 Back-Up Rear Sight for Picatinny Rails – Flip Up, Black (MAG1167-BLK)

• Magpul MBUS 3 rear back-up sight designed for MIL-STD-1913 Picatinny rails
• Spring loaded flip-up sight with ambidextrous push-button deployment for fast activation
• Rapid-select rear aperture system supports quick sight picture changes during shooting
• Folds to 0.44 inch height and measures 1.15 inch wide at widest point
• Impact resistant polymer construction provides lightweight durable rear sight performance
• Deploys to standard AR height and clamps to most Picatinny rail systems

The Magpul Industries MBUS 3 Back-Up Rear Sight is a rifle rear sight designed for providing a deployable aiming reference on firearms with Picatinny rails. This flip-up sight features a rapid-select rear aperture system and mounts to MIL-STD-1913 Picatinny rails for compatibility. It deploys to standard AR-height and integrates with front sight systems for complete sight alignment.

The Magpul Industries MBUS 3 Back-Up Rear Sight is constructed from impact-resistant polymer and uses a spring-loaded mechanism with ambidextrous push-button deployment. This rifle rear sight measures approximately 0.44 inches when folded and 1.15 inches at its widest point. The clamping interface secures firmly to most Picatinny rail platforms without modification. In practical use, the rapid-select aperture allows adjustment between sighting options as needed. The Magpul Industries MBUS 3 Back-Up Rear Sight is used for backup sighting in range use, field applications, and rifle setups requiring a secondary aiming system.