Vintage Unmarked Merit Adjustable Aperture Rear Sight Disc

Vintage Merit Adjustable Aperture Peep Sight

VINTAGE MERIT ADJUSTABLE APERTURE REAR SIGHT DISC 4LS

Vintage Merit Adjustable Aperture Rear Sight Disc w/Rubber Cup

Vintage Merit Adjustable Aperture Rear Sight Disc w/Rubber Cup (Torn)

Vintage mystery Rear adjustable peep Aperture flip back rifle sight OLD custom?

Vintage Merit Adjustable Aperture Rear Sight Disc (Damaged Threads)

Vintage Air Rifle? Pellet? Rear Peep Sight Adjustable Windage Unknown Model (#3)