Magpul MBUS 3 Sight – Front


Only 1 left in stock

SKU: MAG1166-BLK Categories: , UPC: 840815132165



Shooter in Magpul Eyewear aiming with a set of MBUS 3 Sights on an AR15



The next evolution in Magpul’s MBUS (Magpul Back-Up Sight) line, the MBUS 3 incorporates the best features, strengths and value of Magpul’s original MBUS and MBUS Pro Sights in a feature-packed back-up sight system.

Significantly reduced in size from the MBUS, it sits at just 0.47” high when folded, 1.38” at its widest point, and weighs a scant 25 grams with hardware. Its aesthetics are derived from the MBUS Pro, but the MBUS 3 Front Sight is constructed of Magpul’s 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 Front Sight sits at standard AR-height when deployed and includes tool-less elevation adjustment of a dual width enhanced front post similar to the MBUS Pro.

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

Made in the USA.

Front view of deployed MBUS 3 Front Sight on railed forend showing compact dimensions and easy to use release button


Tool-less elevation adjustment and dual width enhanced front sight post, similar to MBUS Pro

0.47” high when folded and 1.38” wide at widest point

Standard AR-height when deployed

Side view of deployed Magpul MBUS 3 Front Sight on railed forend with M-LOK covers showing compact dimensions


Polymer construction, smaller size provides light weight and resists operational abuse

View of stowed MBUS 3 Front Sight on railed forend showing low installed height and compact dimensions



Export Administration Regulations Controlled Product

EXPORT NOTICE: This is an item controlled for export by the Export Administration Regulations (EAR) under the Commerce Control List (CCL). These controls take the form of export regulations and license requirements. As part of the express consideration provided for receipt of Magpul’s goods, technical data and/or services, you, Magpul’s customer, acknowledge that the export, re-export or other transfer, directly or indirectly, of the goods, technical data and/or services provided by Magpul in violation of U.S. law is prohibited. Customers acquiring controlled goods, technical data and/or services from Magpul shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws. (See Magpul Compliance Notices page for more information).

WARNING: Observe safe firearm handling practices at all times. Failure to do so may result in serious bodily injury or death. Magpul Industries shall not be responsible for injury, death, or property damage resulting from faulty installation, misuse, illegal use, or modification of this product.


More Information
Position Front
Height above rail, stowed ~0.47 in.
Platform AR10, AR15, M4, M16, M110, SR25
Weight, w/ hardware 25 g

~1 MOA (1.131”/100 m) per click with a 14.5″ sight radius
~0.7 MOA (0.820”/100 m) per click with a 20″ sight radius

*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.

Additional information

Weight .09 lbs
Dimensions 7 × 4 × 1 in


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