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Ultradyne C4 Rear Sight Aperture Up to 44% Off — 2 models

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05:54
Ultradyne C4 Rear Sight Aperture, .050, Black UD10900
Ultradyne C4 Rear Sight Aperture, .050, Black, UD10900
Ultradyne C4 Rear Sight Aperture, .070, Black, UD10910
Ultradyne C4 Rear Sight Aperture, .050, Black UD10900
Ultradyne C4 Rear Sight Aperture, .050, Black, UD10900
Ultradyne C4 Rear Sight Aperture, .070, Black, UD10910
1 of 2 videos
Ultradyne C4 Rear Sight Aperture 050 Black UD10900 Application Video
2 of 2 videos
Ultradyne C4 Rear Sight Aperture 050 Black UD10900 Application Video
Ultradyne C4 Rear Sight Aperture, .050, Black UD10900
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Ultradyne C4 Rear Sight Aperture, .050, Black UD10900
Ultradyne C4 Rear Sight Aperture, .050, Black, UD10900
2 of 6 images
Ultradyne C4 Rear Sight Aperture, .050, Black, UD10900
Ultradyne C4 Rear Sight Aperture, .070, Black, UD10910
3 of 6 images
Ultradyne C4 Rear Sight Aperture, .070, Black, UD10910
Ultradyne C4 Rear Sight Aperture, .050, Black UD10900
4 of 6 images
Ultradyne C4 Rear Sight Aperture, .050, Black UD10900
Ultradyne C4 Rear Sight Aperture, .050, Black, UD10900
5 of 6 images
Ultradyne C4 Rear Sight Aperture, .050, Black, UD10900
Ultradyne C4 Rear Sight Aperture, .070, Black, UD10910
6 of 6 images
Ultradyne C4 Rear Sight Aperture, .070, Black, UD10910

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made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Ultradyne C4 Rear Sight Aperture

Same size as that included with the C4 Rear Sight, choose this if you need to replace yours. Equivalent to the smaller of the standard A2 flip apertures.image

Specifications for Ultradyne C4 Rear Sight Aperture:

Manufacturer: Ultradyne
Sight Position: Rear
Front Sight Color: REAR SIGHT ONLY
Rear Sight Color: Black
Fabric/Material: 4140 CrMo Steel
Country of Origin: USA
Finish: Nitride
Color: Black

Package Contents:

  • Ultradyne C4 Rear Sight Aperture

Ultradyne C4 Rear Sight Aperture Orderable Models

List of Orderable Models

  • Ultradyne C4 Rear Sight Aperture, .050, Black, UD10900 , MPN: UD10900 , UPC: 851019008507 , Code: 3HE-ARI-RESA-UD10900
  • Ultradyne C4 Rear Sight Aperture, .070, Black, UD10910 , MPN: UD10910 , UPC: 851019008514 , Code: 3HE-ARI-RESA-UD10910
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Last updated 2026-07-05 UTC.