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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 0.47” high when folded, 1.38” at its widest point, and weighs a scant 25 grams with hardware. Its aesthetics are derived from the MBUS Pro, but the MBUS 3 Front 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 Front Sight sits at standard AR-height when deployed and includes tool-less elevation adjustment of a dual width enhanced front post similar to the MBUS Pro.

MBUS 3 Sights will be available in Black, Flat Dark Earth, and OD Green.

Made in the USA.

  • FULL-FEATURED SPRING-LOADED FLIP UP SIGHT; Tool-less elevation adjustment and dual width enhanced front sight post, similar to MBUS Pro. 0.47” 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.

Position: Front
Height above rail, stowed: 0.47in
AR10, AR15, M4, M16, M110, SR25
Weight: 0.9oz

~1 MOA (1.131”/100 m) per click with a 14.5″ sight radius
~0.7 MOA (0.820”/100 m) per click with a 20″ sight radius

*NOTE: Cannot be mounted to a railed gas block due to excess heat issues. Front MBUS must be mounted to a railed forend on the same plane as the receiver rail. Because of this the sight is also not compatible with MOE Hand Guards.


Colors: No selection

Black, Flat Dark Earth (FDE), Olive Drab Green

Manufacturer: No selection



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Magpul MBUS 3 Front Sight

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Magpul MBUS 3 Front Sight $33.00
  • UPC840815132165

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5004 State Highway 74 Cape Girardeau, MO 63701
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