

Click to see full view
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.
Log in to set a price alert on this product.
No Available merchants at this time.
Builders have been adding the Franklin Armory BFSIII AR-S1 Binary Trigger, Gold - 00-50621-TIN to their builds on GunPartPicker since March 2026. All time, it ranks #227 of the 465 triggers builders have added. Builds with this trigger are split between 5.56 NATO (56%) and .223 Wylde (22%), mostly on carbine-length gas (75%, then blowback 25%), and mostly AR-15 (73%, then AR-10 18%).
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:
The part most often added in each category by the 12 builds that include this one

POF USA Strike Eagle Ambidextrous AR-15 Charging Handle

Colt M4 Commando 5.56mm Semi-Auto Lower Receiver Assembly With "LE" Prefix

2A Armament Titanium Regulated Bolt Carrier Group

Fightlite Industries Mcr Dual-Feed Upper MLOK

Sharps Bros Heatseeker Chassis for RUGER American Ranch - SBC05

Geissele Automatics AR-15 MK16 9.3" Super Modular Rail M-LOK Black
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 | $1064.77 |
![]() | 29 | $15552.30 |
No reviews yet. Be the first to review this product!