Is Switchblade/Auto Knife Legal in Washington? (2026)

Key facts

Status

Restricted

Permit required

No

Jurisdiction

Washington

Last reviewed

2026-04-09

Switchblade/Auto Knife laws in Washington

In Washington, switchblade knives, also known as automatic knives, are subject to restrictions. Specifically, RCW 9.41.250 addresses prohibited weapons, including switchblades. The statute defines a switchblade as a knife that opens automatically by spring pressure or similar mechanism, or a knife with a blade that opens by the action of gravity or by a thrust or by centrifugal action. Possession of such knives is generally unlawful. Violations of RCW 9.41.250 are classified as a gross misdemeanor. Penalties for a gross misdemeanor conviction in Washington can include up to 364 days in jail and/or a fine of up to $5,000. While the law does not specify extended prison sentences for repeat offenses, other charges might be added depending on the circumstances of possession. A significant change in Washington law occurred with the passage of Engrossed Substitute Senate Bill 6448, effective June 10, 2024. This legislation legalized the possession, manufacture, sale, and transfer of switchblade knives for individuals who are not otherwise prohibited from possessing firearms under state or federal law. Prior to this change, switchblades were largely prohibited. However, it is important to note that this legalization applies to possession within Washington and does not override federal laws or the laws of other states. Furthermore, while possession is now legal, the carrying of such knives, particularly concealed, may still be subject to other regulations, such as those pertaining to concealed pistol licenses and prohibited places. For residents and travelers in Washington, the recent change in law means that possessing a switchblade knife is no longer illegal in itself, provided the individual is legally permitted to own firearms. However, it remains crucial to be aware of potential restrictions on where these knives can be carried, especially in sensitive places like schools or government buildings, and to understand that other jurisdictions may have different laws. Federal law regarding interstate transport generally allows for the transport of switchblades if possession is legal in both the departure and destination states, but travelers should always verify the specific laws of any state they are passing through or visiting.

Frequently asked questions

Is switchblade/auto knife legal in Washington for travelers?

For travelers visiting Washington, switchblade/auto knife is currently restricted. In Washington, switchblade knives, also known as automatic knives, are subject to restrictions. Specifically, RCW 9.41.250 addresses prohibited weapons, including switchblades. The statute defines a switchblade as a knife that opens automatically by spring pressure or similar mechanism, or a knife with a blade that opens by the action of gravity or by a thrust or by centrifugal action. Possession of such knives is generally unlawful. Violations of RCW 9.41.250 are classified as a gross misdemeanor. Penalties for a gross misdemeanor conviction in Washington can include up to 364 days in jail and/or a fine of up to $5,000. While the law does not specify extended prison sentences for repeat offenses, other charges might be added depending on the circumstances of possession. A significant change in Washington law occurred with the passage of Engrossed Substitute Senate Bill 6448, effective June 10, 2024. This legislation legalized the possession, manufacture, sale, and transfer of switchblade knives for individuals who are not otherwise prohibited from possessing firearms under state or federal law. Prior to this change, switchblades were largely prohibited. However, it is important to note that this legalization applies to possession within Washington and does not override federal laws or the laws of other states. Furthermore, while possession is now legal, the carrying of such knives, particularly concealed, may still be subject to other regulations, such as those pertaining to concealed pistol licenses and prohibited places. For residents and travelers in Washington, the recent change in law means that possessing a switchblade knife is no longer illegal in itself, provided the individual is legally permitted to own firearms. However, it remains crucial to be aware of potential restrictions on where these knives can be carried, especially in sensitive places like schools or government buildings, and to understand that other jurisdictions may have different laws. Federal law regarding interstate transport generally allows for the transport of switchblades if possession is legal in both the departure and destination states, but travelers should always verify the specific laws of any state they are passing through or visiting.

Do I need a permit for switchblade/auto knife in Washington?

Washington does not specifically require a permit for switchblade/auto knife, though general regulations apply.

Can I transport switchblade/auto knife through Washington?

Transport laws for switchblade/auto knife in Washington depend on the specific item and your route. Generally, transport is allowed if you comply with state regulations. Always check states you pass through.

What are the penalties for switchblade/auto knife violations in Washington?

Penalties for switchblade/auto knife violations in Washington vary based on the specific offense. Always verify current laws before traveling.