Quick Summary
The Feyachi RS-31 is a reflex sight with a multiple reticle system and 6 brightness settings. It uses a tubeless design with a 40 mm reflex lens aperture, and the description also refers to a 28 x 40 mm reflector aperture.
Because the product page uses both aperture figures, the exact size should be checked before choosing an offer. The main buying points here are reticle choice, brightness control and the Picatinny rail mount.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | Feyachi. Useful for confirming the exact model family. |
| Model | RS-31. Check this against the product you want. |
| Product type | Reflex sight / red dot sight. Choose this type only if that is the sight format you need. |
| Reticles | 4 adjustable reticles are stated. Compare the reticle style with your preferred sight picture. |
| Brightness settings | 6 brightness settings are stated. This matters if you need brightness control for different lighting conditions. |
| Mount | Picatinny rail mount. Check that your rifle or platform uses the same mounting standard. |
| Aperture | 40 mm reflex lens aperture is stated, while another figure of 28 x 40 mm also appears. Confirm the exact aperture before buying. |
| Finish | Anodized finish is mentioned. This is a visible product feature, but not a performance guarantee. |
What to Compare Before Buying
- Reticle layout: The sight offers 4 adjustable reticles. Compare the sight picture with the one you prefer for aiming.
- Brightness control: 6 brightness settings are stated. Check whether that range suits the lighting you expect to use it in.
- Mounting standard: It uses a Picatinny rail mount. Confirm your setup matches that rail type.
- Aperture size: The page includes two aperture figures, so confirm the exact size if lens area matters to you.
Compatibility, Size and Fit
The key compatibility point is the Picatinny rail mount. Make sure your firearm or rail system matches that standard before choosing this sight. The aperture figures also matter if you are comparing it with other optics, especially where viewing window size is a deciding factor.
Before You Decide
Confirm the RS-31 model, the Picatinny mount and the exact aperture figure before choosing an offer. If you want a specific reticle pattern or brightness range, check that those match your needs.
