Magpul MBUS 3 Back-Up Rear Sight - FDE

Enhance your rifle's reliability with the Magpul MBUS 3 Back-Up Rear Sight in Flat Dark Earth (FDE). Designed as a full-featured, spring-loaded flip-up sight, the MBUS 3 brings premium performance and low-profile versatility to any standard MIL-STD-1913 Picatinny rail.

Featuring ambidextrous push-button deployment, this sight rapidly snaps into action at standard AR height when you need it most. When stowed, its ultra-sleek profile measures just 0.44 inches high and 1.15 inches wide at its widest point, minimizing snag hazards and keeping your sightline clear for primary optics. Built in the USA from high-impact resistant polymer, it delivers extreme durability without adding unnecessary weight to your setup.

Key Features:

• Rapid-Select Rear Aperture System: Easily switch between broad field-of-view and precision aiming apertures.
• Ambidextrous Push-Button Deployment: Spring-loaded mechanism allows instant deployment from either side.
• Low-Profile Footprint: Folds down to just 0.44" high and 1.15" wide to fit beneath low-mounted scopes.
• Standard AR Height: Deploys directly to standard AR-height sightlines for seamless optical co-witnessing.
• Picatinny Rail Compatible: Securely clamps to most standard MIL-STD-1913 Picatinny rails.
• American-Made Durability: Constructed from impact-resistant polymer; proudly made in the USA.