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Magpul MBUS 3 Front Sight Flat Dark Earth
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$39.99
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SKU: MAG1166-FDE-840815132172
Overview
Designed as a compact backup sight for AR platforms, this front sight offers a low-profile solution that stays out of the way until needed. It attaches to MIL-STD-1913 Picatinny rails and uses a spring-loaded flip-up design for quick deployment. The impact-resistant polymer construction keeps the setup lightweight, while the folded profile measures 0.47 inches high and 1.38 inches at its widest point. Finished in Flat Dark Earth, it suits hunters and shooters who want a streamlined sighting option without adding unnecessary bulk.
Why Hunters Choose the Magpul
Slim, Low-profile
Design keeps the sight compact
Spring-loaded Flip-up
Design supports quick deployment
Attaches Mil-std-1913
Picatinny rails
Impact-resistant Polymer
Construction keeps weight down
Standard Ar
Height when deployed for familiar
Key Features
- Flat Dark Earth MBUS 3 front sight for standard AR height when deployed.
- Spring-loaded flip-up design for quick deployment.
- Attaches to MIL-STD-1913 Picatinny rails.
- Impact-resistant polymer construction.
- Low-profile folded height of 0.47 inches.
- Measures 1.38 inches at its widest point.
- Includes hardware and weighs 0.88 oz.
Best Used For
- Hunters needing a low-profile backup front sight for AR setups with limited rail space
- Users who want a spring-loaded flip-up sight for quick deployment on Picatinny rails
- Shooters building a lightweight rifle setup and prioritizing minimal added bulk
- Those matching Flat Dark Earth accessories on a standard AR-height sighting system
Specifications
| Colorfinish | Flat Dark Earth |
|---|---|
| Construction Material | Impact-Resistant Polymer |
| Deployment Height | Standard AR Height When Deployed |
| Design | Slim and Low Profile |
| Height Folded | 0.47 in |
| Item Number | MAG1166-FDE |
| Made In Usa | Yes |
| Mechanism | Spring-Loaded Flip Up Design |
| Model | MBUS 3 Front Sight |
| Rail Compatibility | MIL-STD-1913 Picatinny Rails |
| Type | Front Sight |
| Weight | 0.88 oz |
| Weight With Hardware | 25 grams |
| Width Widest Point | 1.38 in |
Pros
- Slim, low-profile design keeps the sight compact when folded.
- Spring-loaded flip-up design supports quick deployment.
- Attaches to MIL-STD-1913 Picatinny rails.
- Impact-resistant polymer construction keeps weight down.
- Standard AR height when deployed for familiar sight alignment.
- Flat Dark Earth finish matches compatible rifle setups.
Considerations & Trade-offs
- When folded, the sight still adds a small amount of height and width to the rifle, so it is not completely flush with the rail.
- This is a front sight only, so it must be paired with a compatible rear sight to complete a backup iron sight setup.
- It attaches to MIL-STD-1913 Picatinny rails, so it is not a universal fit for every rail system.
- The sight is built from impact-resistant polymer, which keeps weight down but may not appeal to users who prefer metal sight construction.
Suggested Comparisons
- Flip-up rear sight
- Fixed front sight
- Optic-ready backup sight set
Suggested Accessories
- Picatinny rail-mounted optic
- Rear backup sight
- Sight adjustment tool
- Protective rail cover
Frequently Asked Questions
Will this front sight fit a standard AR-height setup when deployed?
Yes. The product specifications state that it is standard AR height when deployed.
What rail system does the MBUS 3 Front Sight attach to?
It attaches to MIL-STD-1913 Picatinny rails.
How compact is the sight when folded?
The folded height is listed as 0.47 inches, and it measures 1.38 inches at its widest point.
What is the sight made of?
The MBUS 3 Front Sight is constructed of impact-resistant polymer.
Does this front sight flip up?
Yes. The product is described as a spring-loaded flip-up design.