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Magpul Industries MBUS
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Magpul Industries

MBUS

$39.95
$37.95
Sale Price
Available California compliant

Magpul Industries MBUS 3 Back-Up Front Sight, Tool-Less Elevation Adjustment Similar to MBUS Pro, Ambidextrous Push-Button Deployment, Fits Picatinny Rails, Flip Up, Flat Dark Earth MAG1166-FDE

Key Details
Brand Magpul Industries
Manufacturer Part Number MAG1166-FDE
UPC 840815132172
SKU MPIMAG1166FDE
Current Stock 714 available
Quantity Updated Apr 23, 2026 8:20 AM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

The next evolution in Magpul's MBUS (Magpul Back-Up Sight) line, the MBUS 3 incorporates the best features, strengths and value of their 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 0.44" high when folded and 1.15" at its widest point. Its aesthetics are derived from the MBUS Pro, but the MBUS 3 Front Sight is constructed of their 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 sits at standard AR-height when deployed. The MBUS 3 Front Sight includes tool-less elevation adjustments and a dual width enhanced front sight similar to the MBUS Pro.

Features
  • Full featured spring loaded flip up sight
  • Tool-less elevation adjustment and dual width enhanced front sight post
  • 0.44 high when folded and 1.15" wide at widest point"
  • Standard AR-height when deployed
  • Impact resistant polymer construction
  • Calmps to most MIL-STD-1913 picatinny rails
  • Made in the U.S.A.
Specifications
UPC: 840815132172
Manufacturer: Magpul Industries
Manufacturer Part #: MAG1166-FDE
Model: MBUS
Model (Alt): 3
Type: Sight