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Questions & Answers
Would I be able to use this with a Daniel Defense Rail Mount Fixed Front Sight? Expert Answer

Yes, the Magpul Industries MBUS 3 Rear Rifle Sight will be compatible (co-witness) with a Daniel Defense fixed front sight.

by Ethan, Gear Expert, October 28, 2022
Will this model work as a co witness with a red dot like the mbus gen 2?

Yes these will co-witness. They are standard height.

by Toren, Verified Owner, April 13, 2022
Customer Reviews
Helpful Positive Review
Great BUIS by Slick, Verified Owner, February 17, 2024
Since these don’t take up as much space as the gen 2 version that I had before I was able to better fit this between my magnifier and red dot. They long up perfectly with my dot for an exact cow it was that I currently have it set for.
2/2 found this helpful
Helpful Positive Review
Perfect design by Flip up bus, Verified Owner, June 23, 2025
The site goes on snug, very snug but operates and zeros fine. Used with Troy industry front site...no issues
1/1 found this helpful
Helpful Positive Review
Works good by Ed, Verified Owner, March 6, 2025
Put this on an AR I built with my grandson. Fits very snug on the rail which to me is good for maintaining accuracy. Used bore site to set it up and first shot was very accurate. Like that it folds down as well.
1/1 found this helpful
Helpful Positive Review
Very happy by Jorgito, December 19, 2023
Nice color match for my AR and a peace of mind with this great sights .
1/1 found this helpful
Helpful Positive Review
first time using the gen 3 mbus by Chris Wright, Verified Owner, February 10, 2024
Much smaller profile than the previous generations.
1/1 found this helpful
Helpful Positive Review
Great Back Up Sights by Mayo, Verified Owner, February 24, 2024
Magpul so you know it's quality. Therefore, this is priced reasonably for the quality you know you are getting. These sights are easy to use, easy to adjust, easy to see. They co-witness with standard height red dots. Mine are centered in the window ...
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2/3 found this helpful
Read All 55 Reviews

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Product Info for Magpul Industries MBUS 3 Rear Rifle Sight

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.image

Significantly reduced in size from the MBUS, it sits at just 0.44in high when folded and 1.15in at its widest point. Its aesthetics are derived from the MBUS Pro, but the MBUS 3 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 Rear Sight sits at standard AR-height when deployed and includes a rapid-select aperture system.

MBUS 3 Sights will be available in Black, Flat Dark Earth, Stealth Gray, and OD Green.

Specifications for Magpul Industries MBUS 3 Rear Rifle Sight:

Manufacturer: Magpul Industries
Condition: New
Gun Model: Knight's Armament M110, SR-25, AR-10, M16, M4, AR-15
Gun Make: AR Platform, Knight Rifles
Fabric/Material: Polymer
Gun Type: Rifle
Mount Type: Picatinny
Attachment Type: Picatinny

Features of Magpul Industries MBUS 3 Rear Rifle Sight

  • Full-featured spring-loaded flip up sight
  • Ambidextrous push-button deployment?and rapid-select rear aperture system
  • 0.44in high when folded and 1.15in wide at widest point
  • Standard AR-height when deployed
  • Polymer construction, smaller size provides light weight and resists operational abuse
  • Clamps to most MIL-STD-1913 Picatinny rails
  • Center of aperture to top of rail: 1.42 in
  • Windage Adjustment: 0.7 MOA (0.754in/100m) per click with a 14.5in sight radius / 0.5 MOA (0.547in/100m) per click with a 20in sight radius

Package Contents:

  • Magpul Industries MBUS 3 Rear Rifle Sight

Magpul Industries MBUS 3 Rear Rifle Sight Orderable Models

List of Orderable Models

  • Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1167-FDE , MPN: MAG1167-FDE , UPC: 840815132202 , Code: 55-IRN-MB3SR-MAG1167-FDE
  • Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1167-ODG , MPN: MAG1167-ODG , UPC: 840815132219 , Code: 55-IRN-MB3SR-MAG1167-ODG
  • Magpul MBUS 3 Rear and Front Flip Sights Set, FDE , MPN: MAG1167-FDE-KIT1 , Code: 55-IRN-MB3SR-MAG1167FDE-KIT1
  • Magpul MBUS 3 Front and Rear Flip Sights Set, OD Green , MPN: MAG1167-ODG-KIT1 , Code: 55-IRN-MB3SR-MAG1167ODG-KIT1
  • Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Black, MAG1167-BLK , MPN: MAG1167-BLK , UPC: 840815132196 , Code: 55-IRN-MB3SR-MAG1167-BLK
  • Magpul MBUS 3 Front and Rear Flip Sights, Black , MPN: MAG1167-BLK-KIT1 , Code: 55-IRN-MB3SR-MAG1167BLK-KIT1

Magpul Industries MBUS 3 Rear Rifle Sight Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Black, MAG1167-BLK , MPN: MAG1167-BLK-EDEMO , Code: 55-IRN-MB3SR-MAG1167-BLK-EDEMO-RE-C
  • USED, Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Black, MAG1167-BLK , MPN: MAG1167-BLK-EDEMO , Code: 55-IRN-MB3SR-MAG1167-BLK-EDEMO-RE-B
  • USED, Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1167-FDE , MPN: MAG1167-FDE-EDEMO , Code: 55-IRN-MB3SR-MAG1167-FDE-EDEMO-RE-B
  • USED, Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1167-ODG , MPN: MAG1167-ODG-EDEMO , Code: 55-IRN-MB3SR-MAG1167-ODG-EDEMO-OB-B
  • USED Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Black, MAG1167-BLK, EDEMO19, Condition Parts Only/Salvage, Defective , MPN: MAG1167-BLK-EDEMO19 , Code: 55-IRN-MB3SR-MAG1167-BLK-EDEMO-DF-F
  • USED Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Black, MAG1167-BLK, EDEMO11, Condition Fair, Other , MPN: MAG1167-BLK-EDEMO11 , Code: 55-IRN-MB3SR-MAG1167-BLK-EDEMO-OT-D
  • USED, Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Black, MAG1167-BLK , MPN: MAG1167-BLK-EDEMO , Code: 55-IRN-MB3SR-MAG1167-BLK-EDEMO-RE-A
  • USED, Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1167-FDE , MPN: MAG1167-FDE-EDEMO , Code: 55-IRN-MB3SR-MAG1167-FDE-EDEMO-US-C
  • USED Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Black, MAG1167-BLK, EDEMO21, Used, Condition Like New , MPN: MAG1167-BLK-EDEMO21 , Code: 55-IRN-MB3SR-MAG1167-BLK-EDEMO21
  • USED Magpul Industries MBUS 3 Sight, Rear, AR10, AR15, M4, M16, M110, SR25, Black, MAG1167-BLK, EDEMO22, Used, Condition Like New , MPN: MAG1167-BLK-EDEMO22 , Code: 55-IRN-MB3SR-MAG1167-BLK-EDEMO22
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