The MBUS 3 is an exciting advancement in the Magpul Back-Up Sight (MBUS) line, offering an impressive combination of features, strength, and value. With a significantly reduced size compared to its predecessor, the MBUS 3 sits at just 0.55” high when folded and 1.38” at its widest point, and weighs an impressively low 30 grams with hardware. Its sleek aesthetics take inspiration from the MBUS Pro, but it is constructed of impact-resistant polymer, making it incredibly lightweight without compromising its durability.

The MBUS 3 Rear Sight boasts the same spring-loaded technology as its predecessor, with the added bonus of ambidextrous push-button deployment and a rapid-select aperture system. When deployed, it sits at standard AR-height and includes a windage adjustable system with the option of three color variants: Black, Flat Dark Earth, and OD Green. The MBUS 3 can clamp to most MIL-STD-1913 Picatinny rails, with a platform suitable for AR10, AR15, M4, M16, M110, and SR25 models.

Its smaller size and polymer construction provide exceptional resistance to operational abuse while maintaining optimum weight, and the windage adjustment system is precise, making it an excellent choice for any shooter.

Compared to its competitors, the MBUS 3 stands out with its impressive combination of features and durability, and its sleek design adds an extra touch of functionality and aesthetics to any firearm. The MBUS 3 is a top choice for anyone searching for a reliable and efficient back-up sight system. Made in the USA.

TECHNICAL SPECIFICATIONS
Position Rear
Height above rail, stowed ~0.55 in.
Platform AR10, AR15, M4, M16, M110, SR25
Weight, w/ hardware 30 g
Other Specs
Center of aperture to top of rail: 1.41 in.
WINDAGE ADJUSTMENT
~0.5 MOA (0.606”/100m) per click with a 14.5" sight radius
~0.4 MOA (0.439”/100 m) per click with a 20" sight radius