MBUS 3 Rear Sight

Full featured spring loaded flip up sight
Ambidextrous push-button deploymentand rapid-select rear aperture system
0.44" high when foldedand 1.15" wide at widest point
Standard AR-height when deployed
Impact resistant polymer construction
Clamps to most MIL-STD-1913 picatinny rails
Made in the U.S.A.