Are Binary Triggers Legal in Washington State?

Binary triggers, which allow a firearm to fire once on the pull and once on the release of the trigger, have become popular among firearm enthusiasts. In Washington State, the legality of binary triggers is nuanced and depends on specific state laws and federal regulations.

While federal law sets certain baselines, Washington's state laws primarily govern the possession, sale, and use of binary triggers. Understanding these laws is crucial for residents and visitors to avoid legal issues.

Is It Legal to Own or Use Binary Triggers in Washington State?

Yes, owning and using binary triggers in Washington State is generally legal for residents and visitors, provided they comply with state and federal regulations.

• Binary triggers are considered firearm parts and are not explicitly banned under Washington law.

• Possession is allowed for individuals legally permitted to own firearms.

• Use is permitted on private property and approved shooting ranges.

• Sales and transfers must comply with standard firearm transaction laws.

Therefore, binary triggers are legal but subject to standard firearm ownership rules.

What Does Washington State Law Say About Binary Triggers?

Washington State law does not specifically mention binary triggers but regulates firearm accessories under general firearm statutes.

• Binary triggers are not classified as machine guns or prohibited devices under state law.

• Possession requires compliance with background checks and age restrictions for firearm parts.

• Sales must be conducted through licensed dealers when applicable.

• Use restrictions align with firearm discharge laws and local ordinances.

In practice, binary triggers are treated like other firearm components without special prohibitions.

Does Federal Law Affect the Legality of Binary Triggers in Washington State?

Yes, federal law impacts the legality of binary triggers but does not outright ban them.

• The National Firearms Act (NFA) regulates machine guns and certain trigger modifications, but binary triggers do not meet the definition of machine guns.

• The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) has issued guidance confirming binary triggers are legal under federal law.

• Federal law sets minimum age and background check requirements for firearm parts sales.

• Federal regulations defer to state law for possession and use restrictions.

Thus, federal law permits binary triggers but requires compliance with overarching firearm regulations.

Which Law Applies in Common Real-World Scenarios?

Understanding which laws apply helps avoid violations when owning or using binary triggers.

• Owning at home:

  Washington state law governs possession; federal law requires lawful ownership.

• Buying online:

  Federal law mandates transfers through licensed dealers; state law may impose additional restrictions.

• Transporting across state lines:

  Federal law regulates interstate transport; state laws of both origin and destination apply.

• Using on private property:

  State and local laws regulate discharge; binary triggers are legal if firearm use is lawful.

Both federal and state laws must be followed in these scenarios.

Restrictions and Conditions You Must Follow

Several restrictions apply to binary trigger ownership and use in Washington State.

• Minimum age of 18 to purchase firearm parts, including binary triggers.

• Background checks required for purchases from licensed dealers.

• Prohibited persons (felons, certain mental health adjudications) cannot possess binary triggers.

• Use restricted in areas with firearm discharge bans or local ordinances.

Compliance with these conditions is essential to lawful possession and use.

Penalties for Violating the Law in Washington State

Violations related to binary triggers can result in serious consequences.

• Unlawful possession may lead to misdemeanor or felony charges depending on circumstances.

• Fines can range from hundreds to thousands of dollars.

• Confiscation of the binary trigger and related firearms is common.

• Criminal charges may result in jail time or probation.

Enforcement often begins with routine checks or reports of illegal use.

Common Situations Where People Get Confused

Several misunderstandings surround binary trigger legality in Washington State.

• Assuming binary triggers are illegal because they increase firing rate, though they are not classified as machine guns.

• Confusing federal and state laws, leading to incorrect assumptions about possession.

• Believing online purchases bypass state laws, which is not true.

• Misunderstanding the difference between owning a binary trigger and using it unlawfully.

Clarifying these points helps avoid legal pitfalls.

Recent Legal Changes or Court Decisions

As of 2026, there have been no significant changes or court rulings specifically addressing binary triggers in Washington State.

The legal status remains consistent with prior interpretations by state and federal agencies.

Practical Examples

If you live in Washington State and legally own firearms, you may purchase and install a binary trigger without violating state law, provided you meet age and background check requirements.

If you bought a binary trigger in another state and bring it into Washington, federal interstate transport laws apply, and you must comply with Washington's possession laws, which generally allow ownership.

Conclusion

Binary triggers are generally legal to own and use in Washington State, subject to standard firearm ownership rules. Both state and federal laws regulate their possession, sale, and use, but no specific bans exist on these devices.

Understanding the applicable restrictions, such as age limits and background checks, is essential. Because firearm laws vary by state, checking local regulations before purchasing or using binary triggers in Washington is important to ensure compliance and avoid penalties.

FAQs

Can I legally buy a binary trigger in Washington State?

Yes, you can legally buy a binary trigger in Washington if you meet the minimum age and pass required background checks through licensed dealers.

Are binary triggers considered machine guns under Washington law?

No, binary triggers are not classified as machine guns under Washington or federal law, so they are not subject to machine gun regulations.

What penalties exist for illegal possession of binary triggers in Washington?

Penalties can include fines, confiscation, misdemeanor or felony charges, and possible jail time depending on the violation's severity.

Can I transport a binary trigger across state lines into Washington?

Yes, but you must comply with federal interstate transport laws and Washington's possession laws, ensuring you are legally allowed to own the device.

Is it legal to use a binary trigger on public land in Washington?

Use on public land depends on local firearm discharge regulations; binary triggers are legal if firearm use is permitted in that area.