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Magpul Industries MBUS 3 Front Rifle Sight Up to 44% Off — 6 models

Special offer available for this product. Click here to see!
01:21
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1166-FDE
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1166-FDE
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul MBUS 3 Front and Read Flip Sights, Black
Magpul MBUS 3 Front and Rear Flip Sights Set, FDE
Magpul MBUS 3 Front and Rear Flip Sights Set, OD Green
Magpul Industries MBUS 3 Front Rifle Sight, Black, Flat Dark Earth, Olive Drab Green
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
1 of 1 videos
Magpul - MBUS 3
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1166-FDE
1 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1166-FDE
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1166-FDE
2 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1166-FDE
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG
3 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG
4 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
5 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
6 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul MBUS 3 Front and Read Flip Sights, Black
7 of 17 images
Magpul MBUS 3 Front and Read Flip Sights, Black
Magpul MBUS 3 Front and Rear Flip Sights Set, FDE
8 of 17 images
Magpul MBUS 3 Front and Rear Flip Sights Set, FDE
Magpul MBUS 3 Front and Rear Flip Sights Set, OD Green
9 of 17 images
Magpul MBUS 3 Front and Rear Flip Sights Set, OD Green
Magpul Industries MBUS 3 Front Rifle Sight, Black, Flat Dark Earth, Olive Drab Green
10 of 17 images
Magpul Industries MBUS 3 Front Rifle Sight, Black, Flat Dark Earth, Olive Drab Green
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
11 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
12 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
13 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
14 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
15 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
16 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK
17 of 17 images
Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK

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Questions & Answers
Are these going to be released soon or should I go with something else? I need sights ASAP since my AR didn't come with anything. Expert Answer

The Magpul Industries MBUS 3 Front Rifle Sight is currently on backorder with an unknown ETA. We also carry the Gen 2 MBUS front and rear flip up sight set, which can be found by using the link below:
https://www.opticsplanet.com/magpul-mbus-front-flip-up-back-up-sight-gen-2.html

by Ethan, Gear Expert, August 8, 2022
See 1 More Answer
Is this a night sight? Expert Answer

No, the Magpul Industries MBUS 3 Front Rifle Sight does not use a tritium front sight post.

by Ethan, Gear Expert, February 7, 2023
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Best that beat the rest by Eric McComas, Verified Owner, 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 prod...
Read More...
1/1 found this helpful
Helpful Positive Review
MBUS 3 improvements are worth the extra $ by Henry D in NC, Verified Owner, October 31, 2023
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 wit...
Read More...
2/2 found this helpful
Helpful Positive Review
Very nice sight by Mike, July 1, 2023
I like this sight and the fact that it is a bit narrower then the older version. Tool-less elevation adjustments is also great as well. I’m using it with a unity fast mount that has a rear peep built in. I don’t know if it is intentional or not but i...
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1/1 found this helpful
Helpful Positive Review
good upgrade by marty, Verified Owner, November 5, 2022
It’s perfect. Super slim and light. Feels sturdy. Not hard to press the area to make it flip up. It’s a good blend of the pros and regular Mbus sights. Magpul did a really good job with this product.
1/1 found this helpful
Helpful Negative Review
Did’t fit on the picatinney rails on three different ARs that I own. by Michael Olson, Verified Owner, September 4, 2025
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.
1/3 found this helpful
Most Recent Reviews
Backup Sight Front by Riptor, Verified Owner, 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...
Read More...
Read All 64 Reviews
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Product Info for Magpul Industries MBUS 3 Front Rifle Sight

The next evolution in the Magpul Industries MBUS (Magpul Back-Up Sight) line, the MBUS 3 Front Rifle Sight incorporates the best features, strengths and value of our original MBUS and MBUS Pro AR 15 Parts in a feature-packed back-up sight system.image

Significantly reduced in size from the MBUS, the Magpul Industries MBUS 3 Front Rifle Sight 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 Front Rifle 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 sits at standard AR-height when deployed.

The MBUS 3 Front Rifle Sight includes tool-less elevation adjustments and a dual width enhanced front sight similar to the MBUS Pro.

NOTE: Cannot be mounted to a railed gas block due to excess heat issues. Front MBUS must be mounted to a railed forend on the same plane as the receiver rail. Because of this the sight is also not compatible with MOE Hand Guards.

Specifications for Magpul Industries MBUS 3 Front 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 Front Rifle Sight

  • Full-featured spring-loaded flip up sight
  • Tool-less elevation adjustment and dual width enhanced front sight post, similar to MBUS Pro
  • 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
  • Elevation Adjustment: 1.6 MOA (1.886in/100m) per click with a 14.5in sight radius / 1.2 MOA (1.367in/100m) per click with a 20in sight radius

Package Contents:

  • Magpul Industries MBUS 3 Front Rifle Sight

What firearm models does the manufacturer say Magpul Industries MBUS 3 Front Rifle Sight is compatible with?

The manufacturer suggests that Magpul Industries MBUS 3 Front Rifle Sight is compatible with AR-15, M4, M16, AR-10, SR-25, Knight's Armament M110

Magpul Industries MBUS 3 Front Rifle Sight Orderable Models

List of Orderable Models

  • Magpul MBUS 3 Front and Read Flip Sights, Black , MPN: MAG1166-BLK-KIT1 , Code: 55-IRN-MB3SF-MAG1166BLK-KIT1
  • Magpul MBUS 3 Front and Rear Flip Sights Set, FDE , MPN: MAG1166-FDE-KIT1 , Code: 55-IRN-MB3SF-MAG1166FDE-KIT1
  • Magpul MBUS 3 Front and Rear Flip Sights Set, OD Green , MPN: MAG1166-ODG-KIT1 , Code: 55-IRN-MB3SF-MAG1166ODG-KIT1
  • Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1166-FDE , MPN: MAG1166-FDE , UPC: 840815132172 , Code: 55-IRN-MB3SF-MAG1166-FDE
  • Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG , MPN: MAG1166-ODG , UPC: 840815132189 , Code: 55-IRN-MB3SF-MAG1166-ODG
  • Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK , MPN: MAG1166-BLK , UPC: 840815132165 , Code: 55-IRN-MB3SF-MAG1166-BLK

Magpul Industries MBUS 3 Front Rifle Sight Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1166-FDE , MPN: MAG1166-FDE-EDEMO , Code: 55-IRN-MB3SF-MAG1166-FDE-EDEMO-RE-B
  • USED, Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK , MPN: MAG1166-BLK-EDEMO , Code: 55-IRN-MB3SF-MAG1166-BLK-EDEMO-RE-B
  • USED, Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG , MPN: MAG1166-ODG-EDEMO , Code: 55-IRN-MB3SF-MAG1166-ODG-EDEMO-OB-B
  • USED Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK, EDEMO27, Used, Condition Like New , MPN: MAG1166-BLK-EDEMO27 , Code: 55-IRN-MB3SF-MAG1166-BLK-EDEMO27
  • USED Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG, EDEMO2, Used, Condition Like New , MPN: MAG1166-ODG-EDEMO2 , Code: 55-IRN-MB3SF-MAG1166-ODG-EDEMO2
  • USED, Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK , MPN: MAG1166-BLK-EDEMO , Code: 55-IRN-MB3SF-MAG1166-BLK-EDEMO-IN-D
  • USED, Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK , MPN: MAG1166-BLK-EDEMO , Code: 55-IRN-MB3SF-MAG1166-BLK-EDEMO-RE-A
  • USED, Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Olive Drab Green, MAG1166-ODG , MPN: MAG1166-ODG-EDEMO , Code: 55-IRN-MB3SF-MAG1166-ODG-EDEMO-RE-C
  • USED, Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Flat Dark Earth, MAG1166-FDE , MPN: MAG1166-FDE-EDEMO , Code: 55-IRN-MB3SF-MAG1166-FDE-EDEMO-RE-C
  • USED, Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK , MPN: MAG1166-BLK-EDEMO , Code: 55-IRN-MB3SF-MAG1166-BLK-EDEMO-OT-U
  • USED Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK, EDEMO24, Condition Parts Only/Salvage, Defective , MPN: MAG1166-BLK-EDEMO24 , Code: 55-IRN-MB3SF-MAG1166-BLK-EDEMO-DF-F
  • USED Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK, EDEMO28, Used, Condition Good , MPN: MAG1166-BLK-EDEMO28 , Code: 55-IRN-MB3SF-MAG1166-BLK-EDEMO28
  • USED Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK, EDEMO13, Used, Condition Fair , MPN: MAG1166-BLK-EDEMO13 , Code: 55-IRN-MB3SF-MAG1166-BLK-EDEMO13
  • USED Magpul Industries MBUS 3 Sight, Front, AR10, AR15, M4, M16, M110, SR25, Black, MAG1166-BLK, EDEMO25, Used, Condition Like New , MPN: MAG1166-BLK-EDEMO25 , Code: 55-IRN-MB3SF-MAG1166-BLK-EDEMO25
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Last updated 2026-07-24 UTC.