Vintage Merit Adjustable Aperture Peep Sight

Vintage Unmarked Merit Adjustable Aperture Rear Sight Disc

Vintage Merit Adjustable Aperture Rear Sight Disc used

Vintage Merit Adjustable Aperture Rear Sight Disc w/Rubber Cup

GG&G MAD Rifle Rear Sight Black Metal Adjustable Mount for Rifle

TROY Industries BattleSight, Fixed Rear Sight SSIG-FRS-ROBT-00

Shanghai/Industry Diopter Rear Sight

Armstrong Dual Range Sight Master Micrometer Rear Sight Upper Aperture