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.
Both front (MAG247) and rear (MAG248) are included.
- SPRING-LOADED FLIP UP SIGHT
- Spring-loaded flip up sight easily activated from either side or by pressing the top
- Protective wings shield the dual, same plane flip apertures
- Sight can still be folded with either large or small aperture in position
- Detent knob easily and positively adjusts windage
- IMPACT-RESISTANT POLYMER CONSTRUCTION
- Polymer construction provides light weight and resists operational abuse
- DETENT AND SPRING PRESSURE KEEPS SIGHT ERECT
- Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc.
- CLAMPS TO MOST MIL-STD-1913 PICATINNY RAILS
- Clamps to MIL-STD-1913 Picatinny/STANAG 4694 receiver rail and provides the same height-over-bore as standard A2 irons