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Magpul MBUS 3 Sight – Front


Video | What’s Included | Specs | Pictures | Restrictions | Related Info

The Magpul BackUp Sights (MBUS 3) take the affordability of the original MBUS sights and the low profile of the MBUS Pros and combine them to create the optimal balance between cost, weight, and profile. Their impact-resistant polymer construction keeps added weight to a minimum while being durable enough to withstand abuse, and the toolless adjustments make zeroing quick and easy. If you want a folding rear sight to match, we carry the MBUS 3 folding rear sight as well.


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One Magpul MBUS 3 front iron sight

We include an 8.5″ x 11″ rifle target with every iron sight. We recommend a 50/200 meter zero for most 5.56 rifles. (Click on the thumbnail for a printable version.)
How to Zero in 2 Minutes – Video – T.REX ARMS

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  • Impact-resistant polymer construction provides a lightweight yet robust system
  • Toolless adjustment
  • Clamps to most MIL-STD-1913 Picatinny rails
  • 0.47” high when folded and 1.38” wide at widest point
  • Standard AR height when deployed

Made in the USA.

View the User Manual HERE.


Weight0.9 ounces (front only) 1.9 ounces (front and rear)
Length2.13 inches
Width1.38 inches
Height0.65 inches (total) 0.47 inches (above rail)
Centerline Height1.41 inches
Elevation Adjustment ~1 MOA (1.131”/100 m) per click with a 14.5″ sight radius 
~0.7 MOA (0.820”/100 m) per click with a 20″ sight radius 

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Magpul products cannot be shipped outside of the US.

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Consistency, Recoil, Trigger Management With a Stock M4 – Video – T.REX ARMS

Training with Rifle Irons – Scalarworks PEAK – Video – T.REX ARMS

50 Round Carbine Course of Fire – Drills – T.REX ARMS

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