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Magpul MBUS 3 Front Flip-Up Black Sight MAG1166-BLK

SKU MAG1166-BLK-Magpul

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Magpul takes their back up sight to the next level with the MBUS (Magpul Back Up Sight) 3. The weight has been reduced to a mere 25 grams and sits at just 0.47” high when folded and measures 1.38” at its widest point. Just like its predecessor the MBUS 3 utilizes a spring-loaded operation, allowing them to be deployed instantly and accommodates left and right-handed users. Once mounted, the MBUS 3 sits at standard AR height when deployed, and windage/elevation adjustments can be made without the use of tools. Available in both front and rear sight configurations.


  • Lightweight & Durable Polymer Construction
  • Spring Loaded Operation
  • Ambidextrous
  • Mounts via 1913 Picatinny Rail


  • Dimensions:0.47" (folded)
    1.38" wide
  • Item ConditionNew
  • Product TypeIron Sights
  • UPC840815132165
  • MPNMAG1166-BLK

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