Is Switchblades / Automatic Knives Legal in New Hampshire? (2026)
Partially — Switchblades / Automatic Knives are legal with restrictions in New Hampshire as of 2026.
Law changed in 2010: The law was clarified in 2010 to remove any ambiguity about the legality of switchblades. No major changes since.
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Quick Answer
New Hampshire RSA 159:3 prohibits the possession and sale of switchblade knives with blades longer than 1.5 inches. Automatic knives with blades shorter than 1.5 inches are legal. The law restricts larger switchblades but allows smaller automatic knives.
- Prohibited for convicted felons under federal law
What the Law Says
New Hampshire law does not prohibit the possession or carry of switchblades for most adults. It is a felony for a convicted felon to possess a switchblade.
— New Hampshire Knife Law Summary, NH Department of Safety
| Category | Details |
|---|---|
| Possession | Illegal to possess switchblades with blades longer than 1.5 inches. |
| Sale & Purchase | Illegal to sell switchblades with blades longer than 1.5 inches. |
| Penalties | Misdemeanor punishable by fines and/or imprisonment. |
| Age Restriction | None specified. |
| Pending Legislation | None known |
The law was clarified in 2010 to remove any ambiguity about the legality of switchblades. No major changes since.
Enforcement Reality
New Hampshire has very permissive knife laws. Switchblades are legal to own and carry, openly or concealed. Enforcement is focused on criminal intent.
A common mistake is for a convicted felon to possess a switchblade. This is illegal.
Local Exceptions
None identified. State law applies uniformly across New Hampshire. Local ordinances may still vary — check with your city or county government for any additional rules.
Bottom Line
Switchblades / Automatic Knives are legal with restrictions in New Hampshire. This product is permitted, but specific conditions apply. Violating those conditions can result in fines or criminal charges. Read the rules carefully and consult an attorney if unsure.
New Hampshire vs. the Rest of the US
Across the US, carrying a switchblade is fully legal in 18 states, restricted in 17, and illegal in 15. New Hampshire falls in the RESTRICTED category.
View the full 50-state map →Neighboring States
Laws change at state lines. Here is how bordering states compare on Switchblades / Automatic Knives:
Body Armor Laws Guide
This topic is closely related to body armor and self-defense laws.
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Frequently Asked Questions
Is it legal to carry Switchblades / Automatic Knives in New Hampshire?
What are the restrictions on carrying a switchblade in New Hampshire?
What mistakes do people make with carrying a switchblade in New Hampshire?
What is the age restriction for carrying a switchblade in New Hampshire?
Does the law on carrying a switchblade change at the New Hampshire border?
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Reviewed by cross-referencing the cited state statute against current legislative databases and regulatory publications.
Sources & Verification
This page was reviewed by Ethan Harper by comparing the legal status against the cited state statute. AllowedHere is an informational resource and does not provide legal advice. Consult a licensed attorney for guidance specific to your situation.
Comprehensive New Hampshire Legal Guides
Explore all related legal topics in New Hampshire — statutes, penalties, and enforcement in one place.
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Switchblades / Automatic Knives in Other States
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