Magpul MBUS AR15 Sight Rear FDE

The Magpul MBUS AR15 Sight Rear FDE is a color injection molded backup iron sight designed for AR-platform rifles where secondary aiming capability is mission-critical. This sight fills the gap between primary optics and the need for a reliable, zero-risk backup option—essential gear for tactical professionals, military personnel, and serious shooters who demand redundancy.

The flat dark earth finish integrates seamlessly with modern rifle builds while maintaining visibility in varied lighting conditions. Built from durable, impact-resistant polymer, the Magpul MBUS AR15 Sight Rear FDE features a spring-loaded flip mechanism that deploys instantly when needed and stows flush against the upper receiver when your primary optic is in use. The sight geometry provides a clean notch pattern optimized for rapid target acquisition, while the compact profile adds negligible mass to your platform.

Law enforcement and military operators pair this rear sight with a matching front MBUS to establish a complete backup aiming system that requires zero batteries and zero electronics—critical when primary systems fail or are damaged in the field. Installation is tool-free; the sight clamps directly onto your Picatinny rail without modification to the receiver or upper assembly.