Are Automatic Knives Legal in New Mexico?
The Short Answer
New Mexico is one of the most complicated states in the country for automatic knife owners. The state has a flat-out ban on switchblade possession under NMS § 30-7-8 — but a separate statute, § 30-7-2, treats switchblades as "deadly weapons" that can be carried openly or in a vehicle. These two laws directly contradict each other, and the legislature has never resolved the conflict. The safest reading: automatic knives, OTF knives, and switchblades are illegal to possess in New Mexico for most people, though legal arguments exist to the contrary.
If you're thinking about carrying an automatic knife in the Land of Enchantment, you need to understand this mess before you make a decision.
What New Mexico Law Actually Says
The Switchblade Ban (NMS § 30-7-8)
The core prohibition is found in § 30-7-8, Unlawful possession of switchblades:
"Unlawful possession of switchblades consists of any person, either manufacturing, causing to be manufactured, possessing, displaying, offering, selling, lending, giving away or purchasing any knife which has a blade which opens automatically by hand pressure applied to a button, spring or other device in the handle of the knife, or any knife having a blade which opens or falls or is ejected into position by the force of gravity or by any outward or centrifugal thrust or movement."
That's about as broad as it gets. The statute covers:
- Button-activated automatic knives (traditional switchblades)
- OTF (out-the-front) knives
- Gravity knives
- Butterfly knives (held to be included per State v. Riddall, 811 P.2d 576, 1991)
- Any knife that opens by centrifugal force
There are no stated exceptions — not for law enforcement, not for military, not for anyone.
The Deadly Weapon Statute (NMS § 30-7-2)
Here's where it gets contradictory. New Mexico defines "deadly weapon" under § 30-1-12 to include:
"any firearm, whether loaded or unloaded; or any weapon which is capable of producing death or great bodily harm, including but not restricted to any types of daggers, brass knuckles, switchblade knives, bowie knives, poniards, butcher knives, dirk knives..."
Switchblades are specifically listed as "deadly weapons." And § 30-7-2 restricts the concealed carry of deadly weapons but provides exceptions allowing carry:
1. On your own property 2. In a private vehicle for lawful protection 3. By certified peace officers 4. By concealed handgun license holders
What That Means in Plain English
You've got two statutes that can't both be right at the same time. One says no person can possess a switchblade, period. The other treats switchblades as deadly weapons that can be carried under certain conditions. As AKTI (the American Knife & Tool Institute) has noted, these statutes are "incompatible," and the legislature should address the contradiction.
The practical reality: if you're caught with an automatic knife in New Mexico, you could be charged under either statute. A good defense attorney might argue the contradiction in your favor, but that's an expensive gamble.
OTF Knives in New Mexico
OTF knives are explicitly covered by § 30-7-8. The statute's language about blades that open "automatically by hand pressure applied to a button, spring or other device in the handle" describes exactly how an OTF knife works. Both single-action and dual-action OTF knives fall squarely within this ban.
Switchblades vs. Automatic Knives: What New Mexico Considers Them
New Mexico doesn't make a legal distinction between switchblades, automatic knives, and OTF knives. The statutory definition is broad enough to encompass all of them. The state also hasn't adopted the federal "bias toward closure" distinction that was incorporated into the Federal Switchblade Act in 2009. According to AKTI, this means assisted-opening knives should also be avoided in New Mexico, as they could potentially be swept into the switchblade definition.
That's a significant departure from most states, where assisted openers are clearly legal.
Carrying an Automatic Knife in New Mexico
Open Carry
Under a strict reading of § 30-7-8, you can't legally possess a switchblade at all — so open carry is off the table.
Under the contradictory reading of § 30-7-2, a deadly weapon (including a switchblade) could theoretically be carried openly, since the concealed carry statute only restricts concealed carry. But relying on this argument is risky.
Concealed Carry
Concealed carry of any deadly weapon is prohibited under § 30-7-2 except:
- On your own property
- In a private automobile for lawful protection
- By certified peace officers
- By valid concealed handgun license holders
Even if you hold a concealed handgun license, the blanket ban under § 30-7-8 creates legal uncertainty about whether that exemption actually applies to switchblades.
Where You Can't Carry (Restricted Locations)
Regardless of how the switchblade contradiction shakes out, these locations have additional restrictions:
- School premises — Carrying a deadly weapon on school property is a fourth-degree felony under § 30-7-2.1, punishable by up to 18 months imprisonment and a $5,000 fine
- Public buses — The Bus Passenger Safety Act (§ 30-7-13) prohibits carrying weapons on public transportation
Blade Length Restrictions
New Mexico has no specific blade length restriction in its state statutes. The issue isn't how long your blade is — it's what type of knife it is and whether you're carrying it concealed.
What About Assisted Openers?
This is where New Mexico gets especially treacherous. Because the state hasn't adopted the "bias toward closure" standard and the switchblade definition includes knives that open by "spring or other device," AKTI specifically warns that assisted-opening knives "should be avoided in New Mexico." That's a cautious reading, but it's worth taking seriously.
Traditional manual-opening folding knives and fixed-blade knives remain legal, provided they aren't carried concealed in a manner that would classify them as "deadly weapons."
Buying Automatic Knives in New Mexico
Under § 30-7-8, it is illegal to manufacture, sell, display, offer, or purchase switchblade knives in New Mexico. Online retailers shipping to New Mexico addresses should be aware of this restriction, though enforcement varies.
Statewide Preemption
New Mexico does have statewide preemption. The state constitution provides that no municipality or county shall regulate any incident of the right to keep and bear arms. This means local jurisdictions cannot add knife restrictions beyond what state law already provides — though with the existing state ban on switchblades, that's cold comfort for automatic knife owners.
Recent Changes and Outlook
The conflicting statutes have been on the books for decades, and the legislature has not acted to resolve them. The New Mexico Supreme Court's decision in State v. Nick (2009) established that ordinary pocketknives are not automatically "deadly weapons," which offers some protection for everyday carry knives. But the separate switchblade ban under § 30-7-8 remains in full effect.
No pending legislation has been identified that would repeal or modify the switchblade ban as of 2026.
Frequently Asked Questions
Can I carry an OTF knife in New Mexico?
No. OTF knives fall directly within the switchblade definition under § 30-7-8 and are prohibited.
Are switchblades illegal in New Mexico?
Yes, under § 30-7-8. There is a contradictory argument based on § 30-7-2, but the flat ban on possession has never been repealed.
Is there a blade length limit for automatic knives in New Mexico?
No specific blade length limit exists, but automatic knives of any blade length are prohibited under the switchblade ban.
Legal Disclaimer
This article is for informational purposes only and does not constitute legal advice. Knife laws change — sometimes faster than websites update. Federal, state, and local laws may all apply to your situation, and local ordinances can be more restrictive than state law.
Before purchasing, carrying, or traveling with any automatic knife, OTF knife, or switchblade, verify current laws with official state and local sources. We are not attorneys, and we are not responsible for actions taken based on this information.
When in doubt, consult a licensed attorney in your jurisdiction.