Magpul MBUS 3 Rear Sight FDE – Folding Back-Up Sight

Description

The Magpul MBUS 3 Rear Sight is a compact, polymer folding back-up sight designed for AR-platform rifles. It provides a low-profile option that sits at standard AR-height when deployed and is built for quick, reliable deployment. The sight uses spring-loaded technology with an ambidextrous push-button for fast access and includes a rapid-select rear aperture with windage adjustment. Its reduced footprint compared to earlier MBUS models helps preserve optics and mounted accessories while remaining robust for routine use.

Key Specifications

• Manufactured by Magpul Industries.
• Model is the MBUS 3 Rear Sight.
• Fits AR-10/AR-15/M-4/M16/M110/SR-25 platforms.
• Mounts to a Picatinny Rail base configuration.
• Constructed from impact-resistant polymer for lightweight durability.
• Finished in Flat Dark Earth (FDE) to match common rifle coatings.
• Deploys with a ambidextrous push-button spring-loaded mechanism.
• Features a windage-adjustable rapid-select aperture rear system.
• Provides 50 MOA of windage adjustment per manufacturer attributes.
• Made in the USA.

Durable, low-profile, and purpose-built for use as a dependable backup on optic-equipped rifles, the MBUS 3 Rear Sight blends compact dimensions with user-focused features like ambidextrous deployment and a rapid-select aperture. Its polymer construction and FDE finish make it a practical choice for shooters seeking a reliable folding rear sight that complements modern AR-platform setups.