The Magpul MBUS Rear Flip Sight Gen 2 in Olive Drab is a battle-proven, polymer back-up iron sight designed to keep you on target when your primary optic fails or is unavailable.
- Spring-loaded flip-up design activates easily from either side or top
- Dual aperture system offers two same-plane sight options for versatility
- Protective wings guard apertures against impact and field abuse
- Tool-free detent knob provides positive, repeatable windage adjustments
- Lightweight polymer construction resists corrosion, heat, and rough handling
- Folds flat under impact without losing zero when raised again
Who This Is For
The Magpul MBUS Gen 2 Rear Sight is ideal for AR-15 and M16 owners who want a reliable, affordable back-up iron sight to complement a red dot or magnified optic. It's equally well-suited for budget-conscious builders looking for a quality primary sight solution that won't add unnecessary weight or bulk to their build. Hunters, competitive shooters, and home-defense owners who prioritize redundancy and durability will all find this sight a worthy addition to their setup.
Specifications
| Brand | Magpul Industries |
|---|---|
| Model | MBUS Rear Sight Gen 2 |
| Color | Olive Drab (OD Green) |
| Material | Color Injection-Molded Polymer |
| Aperture Type | Dual Aperture, Same Plane |
| Rail Compatibility | MIL-STD 1913 Picatinny Rail |
| Primary Platform | AR-15 / M16 |
| Adjustment | Windage (Tool-Free Detent Knob) |
| Deployment | Spring-Loaded Flip-Up |
| Weight | Approx. 1.0 oz |
Frequently Asked Questions
Can the Magpul MBUS Gen 2 Rear Sight be used as a primary sight, or only as a back-up?
While the MBUS was designed as a back-up iron sight (BUIS) to complement optics like red dots or LPVOs, it is fully capable of functioning as a primary iron sight on an AR-15 or M16 platform. Its dual aperture system and windage adjustment make it practical for both roles, especially for shooters on a budget or those building a lightweight patrol rifle.
Is the Magpul MBUS Gen 2 co-witnessed with common red dot sights?
The MBUS Gen 2 Rear Sight is designed to achieve an absolute co-witness with many popular red dot optics — such as the Aimpoint Comp M2 and similar sights — when mounted at standard height on a flat-top AR-15. For lower-third co-witness, you may need a riser mount for your optic. Always verify compatibility with your specific optic and mount height before purchasing.
Will the Olive Drab color affect durability or performance compared to the standard black version?
No — the Olive Drab color is achieved through the same color injection-molding process used for all MBUS sights. The polymer material, spring tension, detent mechanism, and overall durability are identical across all color variants. The OD Green finish simply offers better aesthetic blending with tan, FDE, or OD-colored rifles and accessories.