Magpul MOE MBUS Back-Up Sight - Rear - Flat Dark Earth MAG248FDE

The Magpul MOE MBUS Rear Sight in Flat Dark Earth is a rugged, affordable, and field-ready solution for shooters who demand reliable backup to their primary optics. Built specifically for AR15/M16 platforms, but compatible with most 1913 Picatinny rail-equipped weapons, this folding rear sight offers precision windage adjustment and dual-aperture aiming in a lightweight, low-profile package. Whether you're upgrading your duty rifle or setting up a backup-ready build, the MBUS Rear Sight is a combat-proven essential that won’t let you down when it counts.

Crafted from impact-resistant, injection-molded polymer, the MBUS Rear Sight offers durability without the weight. It’s built to handle operational abuse, staying functional through hard knocks, heavy use, and harsh environments. Weighing just 1.3 ounces and measuring 1.5 inches when deployed, it’s compact enough to stay out of your way until you need it—then spring-loaded to deploy instantly with a press from either side or the top.

Protective wings guard the same-plane dual flip apertures, ensuring they stay intact under stress while providing a clear, consistent sight picture. Whether you’re using the larger aperture for close quarters or the smaller one for precision at distance, the MBUS keeps both ready to go. Even better, the sight folds down securely with either aperture selected, maintaining a low profile while staying fully prepared.

The windage adjustment is controlled via a tactile detent knob that offers positive, repeatable clicks—easy to use even with gloves or in the field. The spring and detent system keeps the sight locked up during use but allows for unobstructed folding if the rifle takes an impact.

This rear sight mounts directly to MIL-STD-1913 Picatinny or STANAG 4694 receiver rails and maintains standard A2 height-over-bore for seamless integration with existing front sights and optics. Proudly made in the USA, the MBUS Rear Sight represents Magpul’s dedication to innovation, quality, and American manufacturing.

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