Date: 30/1/2023 2:54


Williams Diopter Sight

4.5 (91 reviews)
Williams Diopter Sight

Williams Diopter Sight, Image 1

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  • Williams peep sight (5D-AG, part No. 70809)
  • Fits 11mm dovetails
  • Windage and elevation adjustments
  • Useful for airguns and rimfires with a high line of sight

Home in on your targets by replacing your air rifle's rear sight with this one from Williams.

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Item Code: AV-B70809 [PY-A-2003]

Average Customer Review

4.5 (91 reviews)
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2.0 2.0

3.0 3.0

Verified Purchase

Things I liked:

It works as an aperture sight once you get it zeroed.

Things I would have changed:

A very basic aperture sight. Adjustments are crude, about the same level as the cheap factory rear sight on a Crosman 1377. The windage adjustment, if it can be called that, has no witness mark, making it even cruder. The mounting screws are extremely small. Maybe they'll hold a springers recoil. I guess I will see.

What others should know:

If you are used to and looking for old-school Williams quality of the 60s thru the 90s, you will be shocked at this. I guess the fact that it is made of aluminum instead of plastic makes it a Williams. Once you get it zeroed---precisely? Good luck---it will work fine. Best bet is forget the absolute idea the Williams meant quality. Perhaps they do, but not at this level. The next step lower is plastic.

4.0 4.0

5.0 5.0

Verified Purchase

Things I liked:

I like the simplicity and the quality of the sight.

Things I would have changed:

If you can find one get the model with the adjustment knobs.

What others should know:

This model requires a bit of patience to get set up.

5.0 5.0

5.0 5.0

Verified Purchase

Things I liked:

Well built, excellent fit and finish. Works as advertised-very well.

Things I would have changed:

Add application info to the product page. This sight requires a tall sight post, limiting its usefulness at short range.

What others should know:

Williams make a lower profile version that works better on guns like the 2240. The Williams FP-GR-TK Aperture Sight is the one for that and similar applications. The sight I bought will find its home on a Crosman Valiant .22.

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  • Ken from USA asked:

    Will this sight work with a Gamo Whisper front sight?

    • Bryan from USA asked:

      Will this fit on a Daisy 853 to replace the 5899 sight it came with, and could it be used on a daisy 901?

      • Mark from USA answered:

        Yes. The sight will fit both guns.

    • zed from USA asked:

      Will the OEM front sights of QB78S and 2260MB work well with this rear sight?

      • Mark from USA answered:


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