Magpul MBUS3 Flip-Up Sights




Magpul MBUS3 Flip-Up Sights

The next evolution in our MBUS (Magpul Back-Up Sight) line, the Magpul MBUS3 Flip-Up Sights incorporate 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 Magpul MBUS3 Flip-Up Sights 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.

Made in the USA.


  • Spring-loaded flip up sight easily activated from either side or by pressing the top
  • Protective wings shield the dual, same plane flip apertures
  • Sight can still be folded with either large or small aperture in position
  • Detent knob easily and positively adjusts windage
  • Polymer construction provides light weight and resists operational abuse
  • Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc.
  • Clamps to MIL-STD-1913 Picatinny/STANAG 4694 receiver rail and provides the same height-over-bore as standard A2 irons


More Magpul Here


Magpul MBUS3 Flip-Up Sights

  • Height Above Rail: 0.47in
  • Weight: 25g
  • Elevation Adjustment:
    • 1 MOA per click with 14.5″ sight radius
    • .7 MOA per click with 20″ sight radius
  • NOTE: Cannot be mounted on railed gas block due to heat issues.






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