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The new MBUS (Magpul Back-Up Sight) GEN 2 is a low-cost, color injection molded, folding back-up sight.
The new MBUS (Magpul Back-Up Sight) GEN 2 is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits all MIL-STD-1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16/M4 platform.
Impact resistant polymer construction provides light weight and resists operational abuse Spring-loaded flip up sight easily activated from either side or by pressing the top Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc. Clamps to any MIL-STD-1913 Picatinny/STANAG 4694 receiver rail and provides the same height-over-bore as standard A2 irons Protective wings shield the dual flip apertures Detent knob easily and positively adjusts windage Weight, w/ hardware: 1.3 oz. Height above rail, stowed: ~0.51 in. Length, stowed: 2.6 in. Length, deployed: 1.5 in. Reduced size for greater optics compatibility Both small and large apertures are on the same plane Made in U.S.A.