Magpul Industries

MAGPUL MBUS® Rear Sight Gen 2 (Gray)

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MSRP: $57.95
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MAGPUL MBUS® Rear Sight Gen 2 (Gray)

The MAGPUL MBUS Rear Sight in Gray is an affordable, robust folding back-up sight designed for AR15/M16 platforms. This spring-loaded, dual-aperture sight is easily activated and adjusted for windage, fitting most 1913 Picatinny rails. Its impact-resistant polymer construction ensures durability while maintaining lightweight. The MBUS Rear Sight features protective wings for the apertures and a detent system that keeps the sight upright but allows it to fold under impact. Ideal for seamless integration with standard A2 irons, it offers reliability and precision in a compact, efficient design.


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


  • Height above rail, stowed: ~0.51 in.
  • Length, deployed: 1.5 in.
  • Length, stowed: 2.6 in.
  • Weight, w/hardware: 1.3 oz.
  • Center of aperture to top of rail: 1.42 in.
  • Windage Adjustment
    • ~0.7 MOA (0.754"/100m) per click with a 14.5" sight radius
    • ~0.5 MOA (0.547"/100m) per click with a 20" sight radius


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