Quick Summary
The Afranti 551 is a holographic sight with a red and green illuminated dot and 10 brightness levels in total. It is made for a 20 mm rail, and the sight uses 4 x LR44/AG13 button batteries.
The key buying checks are rail fit, battery requirement and the sight’s adjustment features. The product description also mentions side elevation and leverage adjustment, so the exact setup matters if you want the correct mount and aiming position.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | Afranti. This identifies the product line. |
| Model | 551. This helps confirm the exact sight version. |
| Product type | Holographic sight. Compare this with the type of optic you need. |
| Illumination | Red and green illuminated dot. Check whether you want one or both colour options. |
| Brightness | 10 levels of brightness. Compare this with the level control you want. |
| Rail size | 20 mm rail. This is the main fit check before choosing an offer. |
| Batteries | 4 x LR44/AG13 button batteries required. Batteries are not included. |
What to Compare Before Buying
- Rail fit: This sight is for a 20 mm rail, so the mount needs to match your rail width.
- Power supply: It needs 4 x LR44/AG13 button batteries, so check that you are happy to source those separately.
- Illumination: The dot can be used in red or green, with 5 brightness levels for each colour.
- Adjustment: Side elevation and leverage adjustment are mentioned, so compare that layout with the way you prefer to zero an optic.
What Else You May Need
You will need the correct 4 x LR44/AG13 button batteries before use. If your rail is not 20 mm, this sight will not be the right fit.
Before You Decide
Check the 20 mm rail fit, confirm you are happy to supply 4 x LR44/AG13 batteries, and make sure the red and green dot layout suits the optic you want.





