Magpul MBUS Front Sight Flip-Up Back-Up Sight zoom in


Magpul MBUS Front Sight Flip-Up Back-Up Sight

The MBUS (Magpul® Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. 

The MBUS Front Sight is adjustable for elevation and fits most 1913 Picatinny-railed hand guards, but is specifically tailored to the AR15/M16 platform.

  • Impact-resistant polymer construction provides light weight and resists operational abuse
  • Spring-loaded flip-up sight easily activated from either side or by pressing the top
  • Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact
  • Clamps to most any MIL-STD-1913 Picatinny / STANAG 4694 railed hand guard and provides same height-over-bore as standard A2 irons
  • Protective wings shield spring-locking A2 front sight post
  • Elevation adjustment tool included, but most aftermarket A2 front sight adjustment tools may be used 
  • Color: Black
  • Elevation adjustment: ~1.6 MOA (1.886"/100m) per click with 14.5" sight radius
  • Elevation adjustment: ~1.2 MOA (1.367"/100m) per click with 20" sight radius
  • Height above rail (stowed): Approx. 0.51"
  • Length: 2.6" (stowed), 1.5" (deployed)
  • Weight: 1.2 oz.
  • Made in USA
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Magpul® was founded in 1999 with the intent of developing a simple device to aid in the manipulation of rifle magazines while reloading under stress. The company’s name comes from this original product called the Magpul. Over the last nineteen years Magpul has continued to grow and develop using much the same mission and process with a focus on innovation, simplicity, and efficiency.
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