The Magpul MAG248-ODG MBUS rear folding sight is a polymer backup iron sight purpose-built for AR-15 and M16 platforms. If your primary optic fails or malfunctions downrange, a quality iron sight that's already mounted and ready to deploy can mean the difference between staying in the fight and being left without a way to aim. This is that sight. It folds tight against the receiver when not in use, leaving your rail real estate open for accessories, and springs into action with a single touch on either side of the release tab—no tools, no fumbling.

Magpul engineered the MBUS with the field shooter in mind. The streamlined profile won't catch on slings, brush, or gear when folded, and the spring-loaded ambidextrous release mechanism works from left or right. The sight uses less than one inch of Picatinny rail space and locks down solid with the included steel crossbolt. It sits at the same sight plane as a standard A2 iron sight, so your zero transfers if you're switching from an optic to iron—no learning curve in a critical moment.

The rear aperture gives you two peep options: a large .185" opening for speed and light-gathering, and a tight .070" peep for precision at distance. Windage adjustment lets you dial in your zero quickly. The olive drab green finish blends into most setups without calling attention. Whether you're a competition shooter building a backup system, a hunter who refuses to rely on electronics alone, or a defensive rifle builder covering all bases, the MBUS rear sight has earned its reputation as a reliable, no-nonsense iron sight that gets out of the way until you need it.

The Magpul MAG248-ODG MBUS rear folding sight is a polymer backup iron sight purpose-built for AR-15 and M16 platforms. If your primary optic fails or malfunctions downrange, a quality iron sight that's already mounted and ready to deploy can mean the difference between staying in the fight and being left without a way to aim. This is that sight. It folds tight against the receiver when not in use, leaving your rail real estate open for accessories, and springs into action with a single touch on either side of the release tab—no tools, no fumbling.

Magpul engineered the MBUS with the field shooter in mind. The streamlined profile won't catch on slings, brush, or gear when folded, and the spring-loaded ambidextrous release mechanism works from left or right. The sight uses less than one inch of Picatinny rail space and locks down solid with the included steel crossbolt. It sits at the same sight plane as a standard A2 iron sight, so your zero transfers if you're switching from an optic to iron—no learning curve in a critical moment.

The rear aperture gives you two peep options: a large .185" opening for speed and light-gathering, and a tight .070" peep for precision at distance. Windage adjustment lets you dial in your zero quickly. The olive drab green finish blends into most setups without calling attention. Whether you're a competition shooter building a backup system, a hunter who refuses to rely on electronics alone, or a defensive rifle builder covering all bases, the MBUS rear sight has earned its reputation as a reliable, no-nonsense iron sight that gets out of the way until you need it.