Description
The Franklin Armory binary trigger for HK 91, 93, and 94 represents the pinnacle of trigger technology for HK platform rifles. The BFSIII is a revolutionary 3-position trigger system that transforms your HK into the fastest firing semi-automatic rifle on the market, offering unmatched performance for tactical operations and competitive shooting.
Key Specifications
The Franklin Armory binary trigger features three distinct operating positions designed for maximum versatility. Position 1 is the Safe position where the firearm will not fire. Position 2 is Semi-automatic mode, firing one round per trigger pull. Position 3 is the Binary mode where the trigger fires one round on the pull and one round on the release, effectively doubling your rate of fire compared to traditional semi-automatic triggers.
This binary trigger for HK 91, 93, and 94 platforms includes an ambidextrous safety selector that fits most two and three position trigger housings. The trigger pull weight is approximately 4.5 pounds, providing a balance between control and speed. The BFSIII works in SP5K housings and is compatible with most HK 91, 93, and MP5 variants and clones, though some firearms may require additional fitting.
Performance & Ballistics
The binary trigger for HK platforms significantly reduces split times between rounds, allowing shooters to place two separate shots into a much tighter group. This capability gives competitive shooters and tactical operators a substantial advantage in both accuracy and rate of fire. The 3-position design means you can switch between safe, semi-automatic, and binary modes depending on your specific application and local regulations.
Intended Use
The Franklin Armory binary trigger is engineered for tactical and competition applications where split times and rapid accurate fire matter. Whether you’re competing in 3-gun matches, training for tactical scenarios, or simply seeking the ultimate performance upgrade for your HK platform rifle, this binary trigger delivers uncompromised performance. The ability to fire on both the pull and release makes it the fastest legal semi-automatic trigger solution available.
Why Choose CaliperDepot
At CaliperDepot.com, we stock only the highest-quality firearms components and accessories from trusted manufacturers like Franklin Armory. The binary trigger for HK 91, 93, and 94 platforms is backed by Franklin Armory’s reputation for engineering excellence and innovation. We provide detailed product information and competitive pricing on all your tactical and competition shooting needs.
Note: The trigger housing ejector pin and ejector spring are not included with this binary trigger and must be sourced separately. Some installation may be required depending on your specific HK variant. Please verify local and state regulations before purchase, as this product cannot be sold to residents of New York, Delaware, or New Jersey.
Upgrade your HK 91, 93, or 94 platform rifle with the Franklin Armory binary trigger and experience the fastest semi-automatic trigger performance available. Order your BFSIII trigger from CaliperDepot.com today and take your shooting to the next level.







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