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Reviews & Ratings for Magpul Industries MBUS Rear Flip-Up Back Up Sight Gen 2 — 332 reviews

(332 reviews)
Magpul Industries MBUS Rear Flip-Up Back Up Sight Gen 2
Magpul Industries MBUS Rear Flip-Up Back Up Sight Gen 2
As Low As $45.49 Save Up to 22%
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Most Helpful Positive Review Great backup sight
Easy to install. Works perfectly with the fixed A2 front sight on my upper. Folds out of the way when not needed. Great ordering experience from Optics Planet. Pros: Low profile folds flat, high quality polymer Cons: None
Most Helpful Negative Review You get what you pay for
I regretted this purchase as I pulled it from the box. The sight is massive, far bigger than, say, my Noveske or other, more expensive sights. I have since sold it locally. Having said that - for the price you are getting a very solid sight that does what it is supposed to do. I like two apertures,...
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Magpul MBUS Gen 2 rear sight

by Singh, Verified Owner from NV, United States Written on May 17, 2025
I’ve had a great experience with the Magpul MBUS Gen 2 rear sight—it’s easy to install and deploy. The flip-up action is smooth and stays secure when in use. I like how lightweight it is without sacrificing durability. It’s a dependable backup that gives me peace of mind on any setup.
Would recommend: Yes
Was it helpful to you? Yes | No
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Goto pop sight!

by Shawn Baab, Verified Owner from OH, United States Written on April 13, 2025
These are my goto sights for any build or new purchase. Great quality and very easy to install. Price is great at optics planet as well!
Pros:
  • Quality
  • cost
  • easy to install
Cons:
  • None
Best Used for:
  • Any rail equipped firearm.
Would recommend: Yes
Was it helpful to you? Yes | No
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Good sight

by Dk1995, Verified Owner from OK, United States Written on March 7, 2025
Solid sight no issues fit is good and works as it should
Would recommend: Yes
Was it helpful to you? Yes | No
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backup iron sights

by Jerry Mathys, Verified Owner from OH, United States Written on February 22, 2025
I have tried various iron sights over the years, and found that buy the best the first time and you won’t have to buy things twice. Optics planet has everything I need and want. Magpul buis are the best. I look to optics for most of my needs, and delivery is always on time. Thank you optics planet.
Would recommend: Yes
Was it helpful to you? Yes | No
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Magpul MBUS flip up sights

by Josh, Verified Owner from TX, United States Written on February 18, 2025
I have a pair of the Magpul flip sights on just about all my builds.
Would recommend: Yes
Was it helpful to you? Yes | No
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More Typical Magpul

by BearonN, Verified Owner from PA, United States Written on February 3, 2025
As with my review of the MBUS Front Sight, the MBUS Rear Sight is of the same excellent quality! Top quality workmanship, superb functionality, and a solid (few light taps with a plastic hammer to get started on the rail) fit. This review could have been a mirror copy of my Front Sight review: both are top notch sights. As I am with all the Magpul furniture I have on my recent build, I am quite pleased with the sights!
Pros:
  • Excellent fit & finish
  • OUTSTANDING WORKMANSHIP
  • superb functionality
Cons:
  • pricey if you don't look for deals
Best Used for:
  • modular rifle builds
Would recommend: Yes
Was it helpful to you? Yes | No
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Officer John KLEINHENZ

by Lawdog, Verified Owner from OH, United States Written on January 12, 2025
Magnum sites are always excellent choice. Very satisfied with my purchase.
Would recommend: Yes
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ordered a set and got two different gen sights

by DAMOND, Verified Owner from VA, United States Written on December 26, 2024
Different packaging, different shades of grey. Need the sights now so won’t be sending them back. But would not recommend ordering Magpul. Inconsistent color.
Would recommend: No
Was it helpful to you? Yes | No
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Magpul sights.

by RONALD LARSON, Verified Owner from CA, United States Written on December 17, 2024
These sights are a perfect match in color and were darn near perfect straight out of the package. I have put these on all my builds and the coexist perfectly with any of the red/green dots or reticle i may be using. Great product Magpul.
Would recommend: Yes
Was it helpful to you? Yes | No
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Good Enough

by NWS, Verified Owner from MD, United States Written on December 15, 2024
Good enough for the price, fits tight to the rail but bulkier than the more expensive metal options
Pros:
  • EASY INSTALL
Cons:
  • Bulky
Best Used for:
  • Cost effect backup sight
Would recommend: Yes
Was it helpful to you? Yes | No
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