VISM Pro Series Flip-Up Rear Sight

VISM Pro Series Flip-Up Rear SightPro Series Flip-Up Rear sight is a low profile spring loaded rear back-up sight that flips-up and deploys with a push of a button.Features:Features an A2 dual aperture (large & small) that is fully adjustable for windageKnurled windage knob makes adjusting the windage an easy taskRear sight low profile design folds flat to fit under the majority of scopesRear sight flips-up to the deployed position with a push of a buttonDimensions: 2.4"L X 1.2"W X 0.8"HWeight: 2.3 ozAluminum main body with steel A2 rear apertureWindage knobAnd adjustment screwMounts onto Picatinny Mil-STD 1913 railsMounting tool includedSpecification:Color: Black