Are Binary Triggers Legal in Utah? A Guide to State Law

Are Binary Triggers Legal to Own and Use in Utah?

Yes, binary triggers are legal to purchase, own, and install in Utah. There are no state-specific laws that prohibit or regulate them. Federally, the ATF does not classify binary triggers as machine guns, making them legal under current federal law for semi-automatic firearms.

Understanding Utah's Position on Firearm Accessories

Utah has a reputation for being one of the more firearm-friendly states in the nation, and its laws reflect a strong protection of Second Amendment rights. When examining the legality of specific accessories like binary triggers, the key is often what the law *doesn't* say. The Utah Code contains no statutes that specifically name or ban binary triggers, trigger activators, or devices designed to increase a firearm's rate of fire. This legislative silence means that as long as an accessory is legal at the federal level, it is generally permissible within Utah's borders.

This approach places Utah in a different category from states that have enacted specific prohibitions on such devices. The legal environment in Utah is less restrictive, focusing on the user's actions rather than the hardware itself. For owners, this means the primary legal framework to consider is the federal one, established by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). This legal standing is similar to the legal standing of binary triggers in Nevada, a neighboring state with a comparable legal philosophy on many firearm issues.

Unlike bump stocks, which were banned federally via administrative rule, binary triggers have maintained their legal status by adhering to a critical mechanical distinction. This distinction is the core of their legality and is essential for any firearm owner to understand.

The Federal Definition: Why a Binary Trigger is Not a Machine Gun

The cornerstone of federal firearm law is the National Firearms Act (NFA) of 1934 and the Gun Control Act (GCA) of 1968. These laws define a "machinegun" as any firearm which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot, without manual reloading, by a single function of the trigger. The key phrase here is "a single function of the trigger."

A binary trigger operates with two distinct functions. The first function is the pull of the trigger, which fires one round. The second function is the release of the trigger, which fires a second round. Because each action—the pull and the release—causes only a single round to be fired, the ATF has consistently ruled that these devices do not meet the legal definition of a machine gun. Each shot is tied to a separate, voluntary action by the shooter.

This is fundamentally different from a true machine gun, where a single, continuous pull of the trigger will fire rounds repeatedly until the trigger is released or the ammunition is exhausted. It is also mechanically distinct from a bump stock, which used the firearm's recoil to create an oscillating motion that caused the shooter's finger to rapidly re-engage the trigger. The ATF's interpretation has, for now, kept binary triggers in the same legal category as standard semi-automatic triggers.

Technical Mechanics of Binary Firing Systems

To appreciate the legal distinction, it helps to understand the engineering. A typical binary trigger, such as those made by Franklin Armory or Fostech, features a three-position selector. The first position is "Safe," which mechanically prevents the trigger from being pulled. The second position is "Semi-Automatic," where the trigger functions identically to a standard Mil-Spec trigger, firing one round on the pull and resetting on the release.

The third position is "Binary." In this mode, pulling the trigger releases the hammer to fire a round. As the bolt carrier group cycles, it cocks the hammer, but a secondary sear, unique to the binary design, catches it. When the shooter allows the trigger to move forward on the release, this secondary sear disengages, releasing the hammer and firing a second round. The trigger is then fully reset, ready for the next pull.

A critical safety feature in most modern designs is the ability to "outrun the trigger." If the shooter pulls the trigger and decides not to fire the second round on the release, they can move the selector switch back to the "Semi-Automatic" or "Safe" position. This action decocks the hammer or prevents the release shot from occurring, giving the operator control over both functions. This level of control is a key design element that reinforces its semi-automatic classification.

Practical Considerations for Utah Gun Owners

While legal, owning a firearm with a binary trigger in Utah comes with practical responsibilities. The significantly increased rate of fire can be a major draw, but it also means consuming ammunition at a much faster pace. This is a budgetary consideration and a practical one for trips to the shooting range. Many ranges have rules about rapid fire, and while a binary trigger is not a machine gun, its use might attract scrutiny from range safety officers. It's always wise to check range rules beforehand.

There is also a learning curve. Mastering the cadence of the pull-and-release sequence to achieve a smooth, fast rhythm takes practice. New users sometimes inadvertently cause a hammer-follow condition or fail to let the trigger reset properly, which can be frustrating. Proper installation is also key; while many binary triggers are drop-in units, ensuring they are installed correctly is vital for safe and reliable function. Before purchasing a trigger, it is important for prospective buyers to understand the entire process of how to buy a gun if they do not already own a compatible platform.

These triggers are compatible with a wide range of firearms available, most commonly the AR-15 platform. However, models exist for the AK-47, CZ Scorpion, HK MP5-style firearms, and Ruger 10/22, among others. Compatibility should always be confirmed before purchase.

Binary Triggers vs. Forced Reset Triggers (FRTs)

It's important to distinguish binary triggers from another type of aftermarket trigger: the forced reset trigger (FRT). While both are designed to increase the rate of fire, their mechanisms and legal statuses are very different. An FRT uses the energy from the cycling bolt carrier group to physically and forcibly reset the trigger, pushing the shooter's finger forward. This allows for an extremely fast semi-automatic fire rate because the reset is nearly instantaneous.

The ATF has taken a much more aggressive stance against FRTs. In March 2022, the agency declared that some FRT designs are, in fact, machine guns. Their reasoning is that the forced reset mechanism eliminates the need for the shooter to relax their finger to achieve reset, meaning a single, continuous rearward pressure on the trigger can result in continuous fire. This, in the ATF's view, constitutes a single function of the trigger for multiple shots. This has created the complex legal situation surrounding forced reset triggers, which stands in contrast to the current stability of binary trigger legality.

Binary triggers avoid this legal pitfall because the shooter must consciously and actively reverse the direction of the trigger (from pull to release) to fire the second shot. This maintains two separate functions for two shots, keeping it within the legal bounds of a semi-automatic firearm.

Staying Informed on Evolving Firearm Laws

The landscape of firearm law is never static. While binary triggers are currently legal in Utah and at the federal level, owners should remain vigilant. Laws can be changed through legislation at the state or federal level, or through reinterpretation of existing rules by regulatory bodies like the ATF. A future administration could direct the ATF to re-evaluate its classification of binary triggers, just as was done with bump stocks.

For Utah residents, any change would likely have to come from the federal level, as the state legislature has shown little appetite for adding new restrictions on firearm accessories. However, staying informed is the best practice for any gun owner. Following legislative updates and staying up-to-date by reading reliable firearm resources ensures that you remain a responsible and law-abiding gun owner. For now, Utahns can continue to legally purchase and enjoy these popular and innovative firearm accessories.