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4.3 out of 5 stars. 109 reviews

New!Magpul MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up

4.3109 Reviews

Item # 605819999

Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
$39.99
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New!Magpul MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up

4.3109 Reviews

Item # 605819999

Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
Image showing MBUS 3 Front Sight for AR-10, AR-15, M4, M16, M110, SR-25, Black, Flip-Up
$39.99

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The next evolution in our MBUS (Magpul Back-Up Sight) line, the MBUS 3 incorporates the best features, strengths and value of our 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 0.47" high when folded, 1.38" at its widest point, and weighs a scant 25 grams with hardware. Its aesthetics are derived from the MBUS Pro, but the MBUS 3 Front Sight is constructed of our 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 Front Sight sits at standard AR-height when deployed and includes tool-less elevation adjustment of a dual width enhanced front post similar to the MBUS Pro. MBUS 3 Sights will be available in Black, Flat Dark Earth, and OD Green. Made in the USA.

  • Full-featured spring-loaded flip up sight: Tool-less elevation adjustment and dual width enhanced front sight post, similar to MBUS Pro. 0.47" high when folded and 1.38" wide at widest point. Standard AR-height when deployed
  • Impact-resistant polymer construction: Polymer construction, smaller size provides light weight and resists operational abuse
  • Clamps to most MIL-STD-1913 picatinny rails

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Reviews

Rating Snapshot

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79 reviews with 5 stars.
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6 reviews with 3 stars.
2 reviews with 2 stars.
13 reviews with 1 star.

Overall Rating

4.3
64 out of 77 (83%) reviewers recommend this product

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Summary of Reviews
AI-generated from customer reviews, which may include incentivized reviews.
The Magpul MBUS 3 front sight offers a sleek, lightweight design with tool-free adjustability. Many users appreciate these features, but some report difficulties with installation, elevation adjustmen...
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1 to 4 of 109 Reviews
1 – 4 of 109 Reviews
Pennsylvania
Review 1

Mixing Gens

a month ago
Purchased to replace a lost 1st Gen front sight. Works well with the 1st Gen rear sight. Smaller footprint (nice!) different activation method.

Yes, I recommend this product.

Originally posted on Magpul

Miami, Florida
Review 1

New sights with push bottom in the middle

3 months ago
Like these new sights with the push bottom in the center rather than on the outside, although I never had an issue with the older ones.

Yes, I recommend this product.

Originally posted on Magpul

New Hampshire
Review 1

Great Backup Irons Option

4 months ago
During initial install it was tight to get onto the top rail and required some finesse and wiggling to get into proper position but has not moved since tightening. Turret adjustment knob is stiff to move compared to rear sight but tactile enough to count rotations if more than one adjustment was made on accident.

Originally posted on Magpul

Jacksonville, FL.
Review 1

Threaded inserts are not very durable

4 months ago
Just purchased recently for an ALG Defense AR15 EL Corto pistol and the front MBUS 3 sight threaded insert broke loose while tightening! The threaded insert is not a nut like the Gen 2's and is round, so not much force is needed to cause the threaded insert to break loose and start turning in the polymer sight. The MBUS 2 was way better. Just purchased the Meprolight MEPRO FRBS to replace.

No, I do not recommend this product.

Originally posted on Magpul