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Ultradyne
Overview
The Ultradyne USA C4 Offset Folding Front Sight is a durable steel sight designed for versatility and convenience in your AR-15 setup. Its folding and offset style allows for quick deployment and easy transition between sights, making it ideal for dynamic shooting scenarios. This sight is commonly found in builds featuring a mid-length gas system and chambered in 5.56 NATO, providing an effective balance of performance and reliability for various applications.
Ultradyne USA C4 Offset Folding Front Sight was the eighth most added front sight on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it is the seventh most added front sight on the site. Builds with this front sight are split between 5.56 NATO (58%) and .223 Wylde (21%), split between mid-length (40%) and carbine-length (27%) gas systems, and nearly all AR-15.
It was in stock most days in August 2026, but today only Ammunition Depot has it in stock. The best price crept up from $73.29 to $115.99 over August 2026. Buying today, the lowest price is $115.99 at Ammunition Depot, above August's low of $73.29, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every front sight by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Front Sight Guide →The part most often added in each category by the 99 builds that include this one
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Ultradyne Usa C4 Offset Folding Front Sight
| Build | Parts | Total |
|---|---|---|
 | 10 | $3857.78 |
 | 24 | $7000.58 |
 | 27 | $2299.24 |
 | 33 | $2919.42 |
 | 25 | $4826.82 |
 | 26 | $2046.92 |
 | 33 | $3172.83 |
 | 28 | $1107.32 |
| 33 | $2919.42 |
 | 24 | $3516.61 |
 | 18 | $4732.65 |
1 global rating
Top reviews
Ultradyne C4 offset folding front sight fits my mount clean at 45 degrees off the rail. Polymer detents hold it up firmly. Folds completely flat. Sight post adjusts with the included tool. Solid backup behind an LPVO.
