Magpul® MBUS Pro® Rear Sight Picatinny


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SKU: MAG276BLK Categories: ,

The MBUS Pro (Magpul® Back-Up Sight) is a corrosion-resistant all-steel back-up sighting solution that delivers maximum functionality and strength with minimum bulk at a price that’s even smaller than its size.

The dual aperture, windage adjustable Rear and no-tool, elevation adjustable Front Sights excel in all 1913 Picatinny rail mounting applications, including rail-height gas blocks. Positive detents keep the MBUS Pro Front and Rear at standard AR sight height when deployed, and so low when they are stowed that you’ll never notice them until they’re needed. Narrow width Front is compatible with most IR aiming laser and light installations for the professional user.

Made in the USA.


  • All Steel Construction
    • Case hardened and finished with Melonite QPQ for extreme resistance to wear and corrosion
  • Windage Adustable with Low-Profile Knob
    • No tools required
  • Positive Detents in Both the Up and Down Position
    • Standard AR-Style sight height when deployed


Aperture Height Over Rail (in) 1.4
Small Aperture Diameter (in) 0.07
Large Aperture Diameter (in) 0.19
Windage Adjustment w/ 14.5″ Sight Radius (MOA) 0.5
Windage Adjustment w/ 20″ Sight Radius (MOA) 0.4
Stowed Height Above Rail (in) ~0.37
Stowed Length (in) 2.1
Weight w/ Hardware (oz) 1.8

Additional Information:

Manufacturer Part Number MAG276
Distributor Item Number MAG276-BLK


Manufacturers, importers, suppliers, and distributors may make changes to their products without fanfare. Such changes can lead to discrepancies between the advertised product and the actual product in inventory. While International Shooting Supplies Ltd. endeavors to correctly describe the actual product in inventory, we will not be responsible for unintentional inaccuracies in text and images of the advertised product.



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Please note: International Shooting Supplies does not ship to addresses outside Canada.