What is a binary trigger?

A binary trigger is a type of firearm trigger mechanism that functions differently than a standard trigger. Instead of a continuous pull resulting in sustained fire (like in a semi-automatic weapon), a binary trigger fires one round with the initial pull and another round with the release of the trigger.

Here's a breakdown of its key characteristics:

• Two-Stage Firing: The defining feature is its two-stage firing operation. The first stage of the trigger pull cocks the firing mechanism (similar to a single-action pistol). Releasing the trigger then fires the weapon. This is unlike a standard semi-automatic where holding the trigger down results in continuous firing until the magazine is empty or the trigger is released.

• Legal Status: The legality of binary triggers varies widely depending on location. In some jurisdictions, they're considered legal accessories, while in others they're banned outright or subject to specific regulations due to concerns about their increased rate of fire. This often falls under the legal definition of "machine guns" or "automatic weapons," even if they don't technically meet the strictest definition of those terms.

• Mechanism: The exact mechanics vary by manufacturer, but generally involve a clever system of levers, springs, and sear engagements that are timed to fire the weapon upon both trigger pull and release. Some designs may include a reset mechanism to allow for quicker trigger cycling after firing.

• Safety Concerns: The rapid firing capability inherent in a binary trigger presents increased safety risks compared to standard semi-automatic triggers. Accidental discharges are more likely due to the fast operation and potential for unexpected trigger release. Proper training and safe handling practices are crucial when using a binary trigger.

• Use: Binary triggers are most commonly found in AR-15 style rifles, though some adaptations exist for other platforms. They are often sought after by enthusiasts seeking a faster rate of fire in controlled environments like shooting ranges or competitions. However, their use in self-defense scenarios is debated due to the increased risk of accidental discharges and the potential for ammunition waste.

It's crucial to understand the legality of binary triggers in your jurisdiction before purchasing or using one. Always prioritize safety and receive proper training if you intend to handle firearms equipped with this type of trigger mechanism.