The Magpul MBUS Rear Sight (brand part number MAG248-ODG) is a folding back-up sight built specifically for the AR-15/M16 platform. Magpul molds the dual-aperture sight from color-injected polymer in Olive Drab Green and tunes it to fit any standard 1913 Picatinny rail. The sight snaps up under spring tension and can be activated from either side of the wings or with a press on the top release, so it deploys fast under stress. Protective wings shield both apertures from impact whether the sight is folded or deployed, and a detent knob gives positive, repeatable windage adjustment.

Key Specifications

• Built with a dual-aperture design, foldable with either the large or small aperture in position.
• Deploys under spring-loaded tension, activated from either side or the top release.
• Shielded by protective wings that guard both apertures from impact.
• Adjusts for windage with a positive, repeatable detent knob.
• Fits any standard 1913 Picatinny rail, tailored to the AR-15/M16 platform.
• Adjusts 0.7 MOA per click at a 14.5-inch sight radius.
• Adjusts 0.5 MOA per click at a 20-inch sight radius.
• Finished in Olive Drab Green to match OD-green builds.
• Manufactured in the USA.

Frequently Asked Questions

What rifles does this fit? Any AR-15/M16 platform rifle with a standard 1913 Picatinny rail.

Can I adjust it for windage? Yes, a detent knob gives positive, repeatable windage adjustment.

How is it activated? It’s spring-loaded and flips up from either side of the wings or with a press on the top release.

Buy the Magpul MBUS Rear Sight – Olive Drab Green

Add a reliable folding back-up sight in a color that matches your build. Order it from our Magpul Industries lineup, part of our gun sights selection, at our Lubbock, Texas gun shop for fast, direct shipping.