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Franklin Armory
Overview
The Franklin Armory BFSIII AR-S1 Binary Trigger is designed for AR-15 and AR-10 platforms, allowing for a unique binary firing mode that enables the shooter to fire on both pull and release of the trigger. This feature provides a faster rate of fire compared to traditional triggers, making it ideal for dynamic shooting scenarios. Builders often integrate this trigger into carbine-length gas system builds chambered in 5.56 NATO, enhancing responsiveness and versatility in their setups.
Franklin Armory BFSIII AR-S1 Binary Trigger, Gold - 00-50621-TIN
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Franklin Armory BFSIII AR-S1 Binary Trigger, Gold - 00-50621-TIN ranked #145 of the 262 triggers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #209 of the 555 triggers builders have added. Builds with this trigger are split between 5.56 NATO (46%) and .223 Wylde (15%), mostly on carbine-length gas (60%, then blowback 20%), and mostly AR-15 (75%, then AR-10 17%).
Updated · from real builds on GunPartPicker
We ranked every trigger by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Trigger Popularity Report →Check it against the live catalog:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Franklin Armory BFSIII AR-S1 Binary Trigger, Gold - 00-50621-TIN
| Build | Parts | Total |
|---|---|---|
![]() | 16 | $1055.97 |
![]() | 29 | $15623.12 |
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