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 0.55” high when folded, 1.38” at its widest point, and weighs a scant 30 grams with hardware. Its aesthetics are derived from the MBUS Pro, but the MBUS 3 Rear 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 Rear Sight sits at standard AR-height when deployed and includes a windage adjustable, rapid-select aperture system.
Specs:
-Impact-resistant polymer construction provides a lightweight yet robust system.
-Tool less adjustment.
-Clamps to most MIL-STD-1913 Picatinny rails.
-0.55” high when folded and 1.38” wide at widest point.
The MBUS 3 (Magpul Back-Up Sight) is the next evolution in our line of backup sights, combining the best features, durability, and value of both the original MBUS and MBUS Pro sights into one feature-packed system.
Significantly more compact than the previous MBUS design, the MBUS 3 sits just 0.55” high when folded, 1.38” at its widest point, and weighs a mere 30 grams with hardware. While its aesthetics are inspired by the MBUS Pro, the MBUS 3 Rear Sight is made from impact-resistant polymer, ensuring it’s both lightweight and incredibly durable.
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