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-15/m16 sights mangonel sights mad flip-up rear sight fast deployment in ... multiple-setting aperture for precise accuracy originally manufactured under ... contract for picatinny arsenal the mad multiple aperture ... a dependable fast-deploying back-up sight system with preset range points ... securely to the rearmost slot in any picatinny-style flattop receiver rail rotating disc has ... five numbered .070 apertures preset to provide the right elevation for ... quick short-range engagements or precise accuracy at longer distances 0 ­ 0 to ... grain bullet fired from a 16 barrel position number is clearly visible to the ... -grasp serrated windage adjustment knob provides approximately ½ moa adjustment per ...