Are Binary Triggers Legal in Virginia?

Short answer: Yes, binary triggers are currently legal to own, purchase, and install in Virginia. The Commonwealth of Virginia does not have a specific law prohibiting them, and they do not meet the state's legal definition of a machine gun.

Are Binary Triggers Legal in Virginia?

Yes, binary triggers are currently legal to own, purchase, and install in Virginia. The Commonwealth of Virginia does not have a specific law prohibiting them, and they do not meet the state's legal definition of a machine gun. They also remain federally legal under current ATF interpretation.

Virginia State Law and Binary Triggers

For residents of the Commonwealth, the primary question revolves around state-specific statutes. As of today, Virginia's legal code does not contain any language that explicitly bans or regulates binary triggers. The legality hinges on whether such a device would cause a firearm to be classified as a machine gun under state law. Virginia Code § 18.2-289 defines a machine gun as a weapon that shoots or is designed to shoot "automatically more than one shot, without manual reloading, by a single function of the trigger."

This definition is key. A binary trigger initiates the firing of one round upon the pull of the trigger and one round upon the release of the trigger. Because the pull and the release are considered two separate functions, the device does not meet the Virginia definition for automatic fire. Each action, pull or release, results in only a single shot. Therefore, a firearm equipped with a binary trigger is not considered a machine gun under Virginia law and is legal to possess.

It's important for gun owners to understand this distinction. The law is very specific about the 'single function' clause. Unlike a true machine gun, a shooter using a binary trigger can choose not to fire the second round by simply holding the trigger to the rear and engaging the safety. This level of control is a critical element in its current legal classification. Navigating the process of purchasing firearms and accessories can be complex, and understanding the basics is a good first step for any responsible owner. For more information, you can review our guide on how to buy a gun in general.

The Federal Stance: ATF Rulings and Interpretations

While state law is clear, federal law always applies. The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) is responsible for interpreting and enforcing federal firearm laws, including the National Firearms Act (NFA) and the Gun Control Act (GCA). The federal definition of a machine gun, found in 26 U.S.C. § 5845(b), is nearly identical to Virginia's, defining it as any weapon 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."

To date, the ATF has consistently held that most commercially available binary triggers do not meet this definition. In several opinion letters, the agency has affirmed that because the pull and release are two distinct functions, these triggers are not machine guns. This means they are not regulated under the NFA and can be bought and sold like any other standard firearm accessory without requiring a tax stamp or special registration.

However, the ATF's position on trigger mechanisms is not static. The agency's reclassification of bump stocks and, more recently, some Forced Reset Triggers (FRTs) as machine guns demonstrates their willingness to revisit prior interpretations. While the mechanical action of a binary trigger is fundamentally different from an FRT, it shows that the regulatory landscape can change. For a deeper look into how the ATF handles similar devices, our analysis on Forced Reset Triggers legality offers valuable context, even though it focuses on a different state.

Technical Breakdown: How Binary Triggers Function

To appreciate the legal arguments, it's essential to understand the mechanics. A standard AR-15 trigger group has a trigger, hammer, and disconnector. When you pull the trigger, it releases the hammer to strike the firing pin. As the bolt carrier group cycles, it cocks the hammer, which is caught by the disconnector. Releasing the trigger allows the disconnector to hand the hammer back to the trigger sear, resetting it for the next shot.

A binary trigger adds complexity to this process. It typically has a third selector position in addition to 'Safe' and 'Semi.' In 'Binary' mode, the trigger functions differently. When the trigger is pulled, it releases the hammer, firing one round, much like a standard trigger. However, an additional sear or engagement surface is introduced. As the trigger is held back, this secondary sear engages the hammer after it's re-cocked by the bolt carrier.

The second shot occurs upon release. As the shooter allows the trigger to move forward, it releases the hammer from this secondary sear, firing another round. The key is that the trigger must travel forward to its reset point for this to happen. This is why it's considered a separate function. The shooter can always prevent the second shot by keeping the trigger depressed and switching the selector back to 'Safe' before releasing it.

Future Outlook: Could Virginia's Laws Change?

While binary triggers are legal in Virginia today, the political and legislative environment is subject to change. The Virginia General Assembly has seen numerous firearm-related bills introduced in recent years, with some passing and others failing. It is conceivable that a future legislative session could see the introduction of a bill that specifically targets binary triggers or redefines 'machine gun' at the state level to include them.

Gun owners in Virginia should remain vigilant and informed about proposed legislation. Changes to firearm laws can happen quickly, and what is legal one year may be restricted the next. Following news from the Virginia Citizens Defense League (VCDL) and other local advocacy groups can provide updates on pending bills. Staying informed is a core part of responsible gun ownership, and the American Gun Trader blog is another resource for updates on firearm laws and trends.

Comparing Virginia's current stance to other states can also be instructive. Some states have taken direct action to ban these devices, creating a patchwork of laws across the country. For example, understanding Pennsylvania's binary trigger laws can provide insight into how different state legislatures are approaching the issue. This comparative knowledge helps Virginia owners understand the broader national context.

Practical Advice for Virginia Owners

For those who choose to own a binary trigger in Virginia, responsible use is paramount. These devices significantly increase the rate at which ammunition can be expended, which requires a greater level of muzzle discipline and awareness of your backstop. Training is not just recommended; it's essential. You must be completely proficient with the trigger's function, including how to safely 'cancel' the release shot by manipulating the selector.

It's also wise to be prepared for potential interactions with law enforcement who may not be familiar with the nuances of these devices. While perfectly legal, the rapid succession of shots can be mistaken for illegal automatic fire. Having a calm, respectful demeanor and being able to explain how the trigger functions can prevent misunderstandings. However, this is not legal advice, and you should always comply with law enforcement commands.

Finally, consider the financial aspect. Binary triggers are a significant investment, and their legal status directly impacts their worth. Knowing how to determine a firearm's true value, including its accessories, is important for buying, selling, or insurance purposes. As you browse all gun listings, you may see firearms already equipped with these triggers, and understanding their legal and functional characteristics is crucial before making a purchase.