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Reviews & Ratings for Magpul Industries MBUS 3 Front Rifle Sight — 69 reviews

(69 reviews)
Magpul Industries MBUS 3 Front Rifle Sight
Magpul Industries MBUS 3 Front Rifle Sight
As Low As $31.49 Save Up to 21%
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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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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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Great Product

by Erik Forman, from CA, United States Written on March 11, 2026
This is a great product. The gold standard for polymer back up sights. But just before warned that it will not fit underneath a Unity mount for an EOTech magnifier.
Pros:
  • Does what it is supposed to.
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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Best that beat the rest

by Eric McComas, Verified Owner from KY, United States Written on January 24, 2026
MBUS 3 Front Rife Sight is the best front.I never had any sights on my AR 15.But I watch a bunch of videos about having back up sights for your red dot.They recommend this on being great.Guess what they wasn’t lying.I would tell guys to buy this product in a heart beat.
Would recommend: Yes
1 of 1 found the following review helpful.
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Last updated 2025-11-12 UTC.