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    Magpul MBUS 3 Sight – Rear

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    Stock# 53889

    Availability: Limited Quantities


    The next evolution in our MBUS (Magpul Back-Up Sight) line, the MBUS 3 incorporates the best features, strengths and value of our original MBUS and MBUS Pro Sights in a feature-packed back-up sight system. Significantly reduced in size from the MBUS, it sits at just 0.55” high when folded, 1.38” at its widest point, and weighs a scant 30 grams with hardware. Its aesthetics are derived from the MBUS Pro, but the MBUS 3 Rear Sight is constructed of our impact-resistant polymer, making it lightweight and extremely durable. Featuring the same spring-loaded technology as its predecessor, they can be deployed with an ambidextrous push-button. The MBUS 3 Rear Sight sits at standard AR-height when deployed and includes a windage adjustable, rapid-select aperture system.WARNING: Observe safe firearm handling practices at all times. Failure to do so may result in serious bodily injury or death. Magpul Industries shall not be responsible for injury, death, or property damage resulting from faulty installation, misuse, illegal use, or modification of this product.


    • Position: Rear
    • Height above rail, stowed: ~0.55 in.
    • Platform:AR10, AR15, M4, M16, M110, SR25
    • Weight, w/ hardware:30 g
    • Other Specs:Center of aperture to top of rail: 1.41 in.
    • ~0.5 MOA (0.606”/100m) per click with a 14.5" sight radius
    • ~0.4 MOA (0.439”/100 m) per click with a 20" sight radius


    • FULL-FEATURED SPRING-LOADED FLIP UP SIGHT:Ambidextrous push-button deployment and rapid-select rear aperture system, 0.55” high when folded and 1.38” wide at widest point, Standard AR-height when deployed
    • IMPACT-RESISTANT POLYMER CONSTRUCTION: Polymer construction, smaller size provides light weight and resists operational abuse