The MBUS (Magpul(R) 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.
Features :
Polymer construction
Spring-loaded flip up sight
Protective wings shield the dual same plane flip apertures
