The MBUS (Magpul Alternative Attraction) is actually a low-cost, different colors shot formed, folding back-up sight. The dual aperture MBUS Rear Attraction is actually flexible for windage and also accommodates most 1913 Picatinny rail. Clamps to MIL-STD-1913 Picatinny/STANAG 4694 receiver rail and also supplies the very same height-over-bore as conventional A2 irons. Defensive airfoils shelter the dual, very same airplane flip apertures. Attraction may still be actually folded along with either sizable or small aperture in position. Detent opener quickly and also efficiently adjusts windage. Weight, along with equipment: 1.3 ozs. Height above rail, stowed: ~ 0.51 inch. Facility from aperture to best from rail: 1.42 inch. Duration, stowed: 2.6 inch. Duration, set up: 1.5 inch. Windage Adjustment: ~ 0.7 MOA (0.754 inch/100 gauge) per click on along with a 14.5 inch sight span; ~ 0.5 MOA (0.547 inch/100 gauge) per click on along with a TWENTY inch sight span. Made in U.S.A.