FRS Folding Flip Up Rear Sight The rear sight features three operator selectable apertures, including the standard military A2 style double peep aperture with leaf sight aperture, all are adjustable for windage. Super low profile sights. Manufactured from polymer to reduce weight. Ambidextrous spring loaded push button to raise the sights. The rugged flip up mechanism ensures getting into battery repeatedly. Rigid Picatinny mount, eliminates any wobbling. The large aperture is designed to be used for CQB and low light conditions, while the small aperture for longer range target acquisition.

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