MAGPUL Launches MBUS 3 Back Up Iron Sights

Many builders choose to run back up iron sights on their firearms, and the Magpul MBUS front and rear sights have long been considered a dependable and affordable option. Today, as a part of a series of new product launches for 2021, Magpul has announced their updated polymer MBUS 3 back up iron sights.

Via Magpul:

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.

MBUS 3 Front Sight:

Significantly reduced in size from the MBUS, it sits at just 0.44” high when folded and 1.15” at its widest point. Its aesthetics are derived from the MBUS Pro, but the MBUS 3 Front 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 Sight includes tool-less elevation adjustments and a dual width enhanced front sight similar to the MBUS Pro.

MBUS 3 Sights will be available in Black, Flat Dark Earth, Stealth Gray, and OD Green. The front sight will retail for $39.95 and the rear will retail for $59.95.


  • Tool-less elevation adjustment similar to the MBUS Pro and ambidextrous push-button deployment
  • Dual width enhanced front sight similar to MBUS Pro
  • 0.44” high when folded  and 1.15” wide at widest point
  • Standard AR-height when deployed

Did you find this article useful?

Let the author know with a 5 star rating!

Average rating 5 / 5. Vote count: 6

No votes so far! Your rating will help us continue to provide valuable and interesting content.

Since you found this post useful...

Follow us on social for first dibs on brand new content!

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Notify of

1 Comment
Most Voted
Newest Oldest
Inline Feedbacks
View all comments
1 year ago

they may have launched them, but spring of 22 is now almost over and no one has been able to catch a set, over a year later. I got tired of waiting and bought a great Primary Arms red/green 5x prism sight

If you want to be among the first to know when we release new content, your best bet is to sign up via email:

We’ll keep the emails to a minimum and we will never sell or give your information to a third party.

Would love your thoughts, please comment.x