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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.
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Based on build data

Fightlite Industries Mcr Dual-Feed Upper Mlok
Upper Receiver
Steiner M5XI Rifle Scope 5-25x56mm - High-Power Scope for Precision Long-Range Shooting - 8704-MSR V2
Rifle Scopes
L3Harris ATPIAL-C Advanced Laser System - Black
Laser
Pof Usa Strike Eagle Ambidextrous Ar-15 Charging Handle
Charging Handle
Patriot Ordnance Factory .223 Dictator AR-15 Gas Block Adjustable Carbine Length
Gas Block
Seekins Precision Ambidextrous Safety Selector - Red
SafetyAggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Fightlite Industries Mcr Dual-Feed Upper Mlok | Upper Receiver | 3 |
| Steiner M5XI Rifle Scope 5-25x56mm - High-Power Scope for Precision Long-Range Shooting - 8704-MSR V2 | Rifle Scopes | 2 |
| L3Harris ATPIAL-C Advanced Laser System - Black | Laser | 2 |
| Pof Usa Strike Eagle Ambidextrous Ar-15 Charging Handle | Charging Handle | 2 |
| Patriot Ordnance Factory .223 Dictator AR-15 Gas Block Adjustable Carbine Length | Gas Block | 2 |
| Seekins Precision Ambidextrous Safety Selector - Red | Safety | 2 |
| Platform | Percentage |
|---|---|
| AR-15 | 72.7% |
| AR-10 | 18.2% |
| AR-9 | 9.1% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 55.6% |
| .223 Wylde | 22.2% |
| 300 Blackout | 11.1% |
| 9mm | 11.1% |
| Gas System | Percentage |
|---|---|
| Carbine | 75% |
| Blowback | 25% |
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