This Williams Gun Sight Company manufactured aperture peep sight upper assembly is designed to attach to any of the Western Precision series receiver sight bases and is in as new condition. The assembly consists of the slide, slide binding screw, threaded holder, holder binding screw and the 3/8" aperture with the short 5/16" in length stem and a .093" sighting peep hole.  (file photo)

Inform us: We would like to know if this product is available in new conditon with unlimited availability on any other parts supplier's website with a lower price tag.

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