Magpul MBUS 3 Folding Front Sight

The Magpul MBUS 3 Front Sight is the next evolution in the MBUS (Magpul Back-Up Sight) line. The MBUS 3 incorporates the best features, strengths and value of the 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 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 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.

• 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
• Polymer construction, smaller size provides light weight and resists operational abuse
• Clamps to most MIL-STD-1913 Picatinny rails

ELEVATION ADJUSTMENT

~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.