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Reviews & Ratings for Magpul Industries MBUS 3 Front Rifle Sight — 71 reviews

(71 reviews)
Magpul Industries MBUS 3 Front Rifle Sight
Magpul Industries MBUS 3 Front Rifle Sight
As Low As $35.95 Save Up to 18%
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Most Helpful Positive Review MBUS 3 improvements are worth the extra $
The MBUS 3 sight housings are slightly smaller and lower profile than the gen 2 while being much easier to adjust (no tool or makeshift implement is needed for the front sight, and the rear sight's small to large aperture selection is made easier with separate apertures separated by 45 degrees of ro...
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Most Helpful Negative Review Did’t fit on the picatinney rails on three different ARs that I own.
DO NOT RECOMMEND! I looked-on line, followed all suggestions. Finally, used a file, got the front sight mounted. Decided to not mess with rear sight. Not happy with these sights at all.
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Front and rear sites

by Michael, Verified Owner from WV, United States Written on November 1, 2026
They fit perfectly. They were stiff at first but a little word they became easy to work
Would recommend: Yes
Was it helpful to you? Yes | No
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best for sight

by code-red, Verified Owner from OH, United States Written on September 16, 2026
For the money this seems to be the Best Buy for flip up front sight. Very user friendly spring loaded flip up function. Release button works very well
Pros:
  • None
Cons:
  • easy to install & light weight.
Would recommend: Yes
Was it helpful to you? Yes | No
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Perfect Slim BUIS

by JackO, Verified Owner from MA, United States Written on September 9, 2026
I purchased these for my department. We are issuing new rifles and I wanted a slimmer BUIS. These are noticeably thinner than the gen2 and fit the job perfectly. The slide on with little effort and, honestly, were 100% on zero out of the box. Couldn't be happier!
Pros:
  • Perfect Fit
  • Slim Deisgn
  • Great zero out of the box
Cons:
  • No side thumb button
Best Used for:
  • Any BUIS need
Would recommend: Yes
Was it helpful to you? Yes | No
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Can’t go wrong with magpul

by Gatfull, Verified Owner from VA, United States Written on August 23, 2026
Magppul makes rock solid products. These backup flip up sights work great
Pros:
  • dependability
Cons:
  • Polomer
Best Used for:
  • Backup sights
Would recommend: Yes
Was it helpful to you? Yes | No
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magpul irons

by bsosa, Verified Owner from FL, United States Written on August 16, 2026
Great quality and manufacturer. Can never go wrong with magpul! Exactly what I wanted.
Would recommend: Yes
Was it helpful to you? Yes | No
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Magpul Never Disappoints

by Andrew McLemore, Verified Owner from VA, United States Written on August 6, 2026
I own several rifles. All are equipped with these sights. Very durable and easy to adjust.
Would recommend: Yes
Was it helpful to you? Yes | No
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Great Product at a Good Price

by kb1004, Verified Owner from TX, United States Written on August 1, 2026
The iron sights are very sturdy and appear very durable. The flip-up buttons work as intended. I love the FDE color as it matches the rest of my build. Only reason I gave 4 stars is that they are a little challenging to connect to the picatinny rail but that does mean you never have to worry about them coming loose or falling off.
Would recommend: Yes
Was it helpful to you? Yes | No
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Backup Sight Front

by Riptor, Verified Owner from IN, United States Written on June 6, 2026
Purchased for a set of backups for a build. I put gray and black XTM panels on it so I bought this Gen 3 front sight and a Gray gen 2 rear to keep with the aesthetic. Easy to install, easy to use, affordable, high quality...everything Magpul has been synonymous with. Only thing getting used to with mixing generations is the gen 3 front it actuated from the front of the sight and the gen 2 are actuated from side paddles. I usually buy the MBUS Pro steel sights but I wanted to try the polymer. 5 stars.
Pros:
  • Price
  • Ease of use
  • Ease of Install
Cons:
  • None
Best Used for:
  • Training
  • defence
  • Backup sights
Would recommend: Yes
Was it helpful to you? Yes | No
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Its Magpul

by kp7159, Verified Owner from CA, United States Written on May 17, 2026
Typical Magpul stuff,quality,need I say more.
And buying from Optics Planet is a pleasure,always have what I need.
Would recommend: Yes
Was it helpful to you? Yes | No
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good enough

by Clyde, Verified Owner from GA, United States Written on April 7, 2026
These sights do what they’re supposed to do. Put the thing on the thing and pull the thing. If you need polymer lightweight backup sights then look no further.
Pros:
  • light weight
Cons:
  • Polymer
Best Used for:
  • Aiming
Would recommend: Yes
Was it helpful to you? Yes | No
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Last updated 2025-11-12 UTC.