Franklin Armory BFSIII AR-C1 Trigger

Description

The Franklin Armory BFSIII AR-C1 is a binary trigger designed for AR-15-style rifles, allowing for a unique firing mode that fires one shot on the pull of the trigger and another on the release. This effectively enables a faster rate of fire than a standard semi-automatic trigger while still complying with federal regulations (as it does not constitute a machine gun under the ATF’s definitions).

Key Features:

• Binary Firing Mode:
  • Pull: Fires one round.
  • Release: Fires another round (if the hammer resets properly).
• Three Modes:
  • Safe (S): Prevents trigger movement.
  • Binary (B): Enables binary firing.
  • Semi (●): Functions like a standard semi-auto trigger.
• Compatibility:
  • Designed for mil-spec AR-15/M16 lower receivers.
  • Works with most standard AR-15 parts (may require tuning for reliability).
• No Full-Auto or Burst:
  • Not classified as a machine gun by the ATF (as of current rulings).
  • Always confirm local laws, as some states ban binary triggers.

Installation & Functionality Notes:

• Requires Proper Tuning:
  • May need an optimized buffer spring, bolt carrier group, and ammunition for reliable binary function.
  • Light primer strikes or malfunctions can occur if not properly set up
• Not a Drop-In Trigger:
  • Installation requires some gunsmithing knowledge.
  • Includes anti-walk pins. Franklin Armory BFSIII AR-C1 Trigger

Legal Considerations:

• ATF Compliance:
  • The BFSIII is legal at the federal level, but some states (e.g., CA, NY, NJ, WA) restrict or ban binary triggers.
  • Always verify state and local laws before purchasing.
• Not for Use with Bump Stocks or Other Devices:
  • Combining with bump stocks or accelerators may violate ATF rules.

Performance & User Experience:

• Faster Than Semi-Auto, Slower Than Full-Auto:
  • With practice, users can achieve ~400-600 RPM (depends on finger speed and rifle setup).
• Training & Safety Critical:
  • Requires discipline to avoid accidental discharges (especially on release). Franklin Armory BFSIII AR-C1 Trigger

Alternatives:

• Fostech Echo AR-II – Another popular binary trigger with similar functionality.
• Rare Breed FRT-15 – A forced-reset trigger (currently under ATF scrutiny, possibly banned).

Final Thoughts:

The Franklin Armory BFSIII AR-C1 is a fun and legal way to increase firing speed on an AR-15 where permitted, but it requires proper setup and awareness of local laws. If you’re in a binary-trigger-friendly state and willing to tune your rifle, it can be a great range toy.