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Magpul MBUS Gen 3 - Front Sight

Front Sight

As low as: $37.95
Out of stock

Magpul MBUS Gen 3 - Front Sight

Rainier Arms Free Ground Shipping

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.


  • 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
  • Polymer construction, smaller size provides light weight and resists operational abuse
  • Clamps to most MIL-STD-1913 picatinny rails


  • Position: Front
  • Height above rail, stowed: ~0.47 in.
  • Platform: AR10, AR15, M4, M16, M110, SR25
  • Weight with hardware: 25 g
  • Elevation Adjustment:
    • ~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.

Please NOTE: Products other than the front sight is for display purposes only.

More Information
Product Type Front Sight
Manufacturer Magpul Industries
Mount Picatinny
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