Magpul MBUS 3 Rear Flip-Up Sight, FDE Polymer

The Magpul MBUS 3 Rear Sight is a folding back-up sight designed for AR-platform applications. Its impact-resistant polymer construction keeps the sight lightweight while providing a spring-loaded, ambidextrous push-button deployment system. The Flat Dark Earth finish and Picatinny rail configuration provide a practical fit for compatible setups.

Key Specifications

• The sight is constructed from impact-resistant polymer for lightweight durability.
• The finish is Flat Dark Earth.
• The design is a folding rear back-up sight.
• Deployment uses an ambidextrous push button.
• The rear sight includes a rapid-select aperture system.
• Windage adjustment is provided through the rear sight assembly.
• The sight mounts to a Picatinny rail.
• It is listed for AR-10, AR-15, M-4, M16, M110, and SR-25 platforms.
• The sight is designed to sit at standard AR height when deployed.
• The sight weighs 30 grams with hardware.

With compact folding functionality, straightforward push-button deployment, and selectable rear apertures, the MBUS 3 provides a capable backup sighting option for compatible AR-platform configurations. Its polymer construction balances low weight with the durability expected from a field-ready sight.

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