KAK A1 AR-15 Rear Sight Aperture

The KAK A1 Rear Sight Aperture Kit contains all the parts needed to rebuild the A1 rear sight on your AR-15. These quality parts are perfect for upgrading an old rifle, or finishing out a new build. Includes:A1 REAR SIGHT APERTUREA1 REAR SIGHT APERTURE FLAT SPRING.A1 REAR SIGHT WINDAGE DRUM A1 REAR SIGHT DETENT A1 REAR SIGHT DETENT SPRING A1 REAR SIGHT ROLL PIN A1 REAR SIGHT WINDAGE SCREW