This AR-15 Back-Up Rear Sight should fit all AR15, M4 and M16 flattop picatinny rail upper receivers. It is fully adjustable for elevation and windage with knurled click adjustable controls. We also have M-16/AR-15 Flip Up Rear Sight if you are looking for another type of AR15 Backup Iron Sight.
Matte Black in Color.
Made of Steel and Aluminum.
A2 rear sight assembly with large and small rear aperture.
Large steel thumb nut and steel rail clamp for positive and secure attachment to your upper receiver.
Made by NcStar.
If you need a tool to sight your AR-15 Rifles, we have AR15 front sight adjustment tools for sale.