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.
Made in the USA.NSN: MAG248-BLK 1005-01-591-6150NSN: MAG248-FDE 1005-01-616-4884NSN: MAG248-ODG 1005-01-616-4888
SPRING-LOADED FLIP UP SIGHT
Spring-loaded flip up sight easily activated from either side or by pressing the topProtective wings shield the dual, same plane flip aperturesSight can still be folded with either large or small aperture in positionDetent 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