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

Key facts

Status

Restricted

Permit required

No

Jurisdiction

Massachusetts

Last reviewed

2026-04-09

Switchblade/Auto Knife laws in Massachusetts

In Massachusetts, switchblade knives, also known as automatic knives or knives with a spring, metal tab, or other device that propels the blade open with a flick of the wrist or by the force of gravity, are regulated. Specifically, Massachusetts General Laws Chapter 269, Section 10(b) generally prohibits the possession, carrying, or sale of switchblade knives. This prohibition is broad and does not typically distinguish based on blade length or method of opening for what is defined as a switchblade. Violations of M.G.L. c. 269, § 10(b) are classified as a misdemeanor. Penalties can include imprisonment for up to two and a half years in the county jail or a fine of up to $500, or both. Subsequent offenses may carry enhanced penalties. The intent of this statute is to prevent the prohibited knives from being readily available for offensive use. While M.G.L. c. 269, § 10(b) explicitly bans switchblades, there are very limited exceptions to this broad prohibition. Historically, exceptions were narrow and often focused on law enforcement officers or specific occupational uses, though these are difficult to ascertain without specific clarification from law enforcement or legal counsel. It is critical for individuals to be aware that the definition of a switchblade under Massachusetts law is inclusive and applies to a wide range of knives that have an automatic opening mechanism. Furthermore, local municipal ordinances may impose additional restrictions beyond state law, making it essential to consult local regulations. For travelers or residents, the primary practical consideration is that possessing a switchblade knife in Massachusetts is illegal and subject to criminal penalties. Even if a knife is legal in another state, it can lead to arrest and prosecution if brought into Massachusetts. Federal law, such as the Protection of Lawful Commerce in Arms Act, does not preempt state laws concerning the possession of prohibited weapons like switchblades, meaning interstate transport of such items into or through Massachusetts is also restricted. It is strongly advised to avoid carrying any knife that could be construed as a switchblade within the state.

Frequently asked questions

Is switchblade/auto knife legal in Massachusetts for travelers?

For travelers visiting Massachusetts, switchblade/auto knife is currently restricted. In Massachusetts, switchblade knives, also known as automatic knives or knives with a spring, metal tab, or other device that propels the blade open with a flick of the wrist or by the force of gravity, are regulated. Specifically, Massachusetts General Laws Chapter 269, Section 10(b) generally prohibits the possession, carrying, or sale of switchblade knives. This prohibition is broad and does not typically distinguish based on blade length or method of opening for what is defined as a switchblade. Violations of M.G.L. c. 269, § 10(b) are classified as a misdemeanor. Penalties can include imprisonment for up to two and a half years in the county jail or a fine of up to $500, or both. Subsequent offenses may carry enhanced penalties. The intent of this statute is to prevent the prohibited knives from being readily available for offensive use. While M.G.L. c. 269, § 10(b) explicitly bans switchblades, there are very limited exceptions to this broad prohibition. Historically, exceptions were narrow and often focused on law enforcement officers or specific occupational uses, though these are difficult to ascertain without specific clarification from law enforcement or legal counsel. It is critical for individuals to be aware that the definition of a switchblade under Massachusetts law is inclusive and applies to a wide range of knives that have an automatic opening mechanism. Furthermore, local municipal ordinances may impose additional restrictions beyond state law, making it essential to consult local regulations. For travelers or residents, the primary practical consideration is that possessing a switchblade knife in Massachusetts is illegal and subject to criminal penalties. Even if a knife is legal in another state, it can lead to arrest and prosecution if brought into Massachusetts. Federal law, such as the Protection of Lawful Commerce in Arms Act, does not preempt state laws concerning the possession of prohibited weapons like switchblades, meaning interstate transport of such items into or through Massachusetts is also restricted. It is strongly advised to avoid carrying any knife that could be construed as a switchblade within the state.

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

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

Can I transport switchblade/auto knife through Massachusetts?

Transport laws for switchblade/auto knife in Massachusetts 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 Massachusetts?

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