The MBUS (Magpul Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16 platform.
Specifications
| Features | Spring loaded flip up sight; Spring-loaded flip up sight easily activated with side or top press; Protective wings shield the dual, same plane flip apertures; Detent knob easily and positively adjusts windage; Polymer construction provides light weight and resists abuse; Detent and spring pressure keeps sight in place for unobstructed folding |
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