Magpul Industries came out swinging at TFB’s Gun Fest 2021 with some awesome new products and one of the first ones introduced to us during the new product showcase were the MBUS 3 next-gen polymer backup iron sights. The new sights are sleeker, lighter, and come in at an aggressively competitive price.

[TFB GUN FEST] MBUS 3 Next-Gen Backup Iron 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.

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.

Made in the USA.

There are a few observations I made from handling the sights in-person while at TFB Gun Fest. First, the new sights are much lighter and compact compared to their earlier counterparts. Also, the demo rifle that was brought to Gun Fest perfectly showcased the much smaller size of the backup irons, easily fitting underneath an LPVO optic with some room to spare. I also much appreciated the addition of a tool-less adjustment system to the backup irons as keeping the front sight adjustment tool around was kind of a pain in the ass from previous generations. Now, adjustments are easy to make by hand without the need to keep a tiny tool around.

The MBUS 3 backup iron sights are available for sale on Magpul’s website. A pair of sights will set you back just $99.90 or $59.95 and $39.95 for the rear and front sights respectively. Magpul MBUS 3 sights will be available in 4 colors ranging from Black, FDE, Stealth Gray, and OD Green.

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