AR-15 Upper Receiver Parts

Rear Sight Windage Knob Screw, A-2
Rear Sight Windage Knob Screw, A-2

Rear Sight Aperature, A-2
Rear Sight Aperature, A-2

Rear Sight Flat Spring
Rear Sight Flat Spring

Rear Sight Base
Rear Sight Base

Rear Sight Elevation Knob Spring
Rear Sight Elevation Knob Spring