Magpul Industries MBUS Back-Up Rear Sight Gen 2 | Fits Picatinny Rails | Flip Up | Black

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.

KEY 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