“Is your pocket knife a tool or a felony? In NY, the line between utility and Criminal Possession of a Weapon 4th is thinner than you think. Updated for the 2019 Gravity Knife repeal.”
I frequently get asked about the legality of carrying a knife in New York. While the law has evolved since I first addressed this, the fundamental philosophy of “Tools vs. Weapons” remains the same. Here is the breakdown of the current Penal Law and how it impacts the practitioner.
1. The Prohibited List (Per Se Weapons)
Under NY Penal Law § 265.01 (Criminal Possession of a Weapon 4th), certain items are illegal to possess simply by existing. You cannot carry these, regardless of your intent:
- Switchblades and Pilum ballistic knives
- Metal knuckle knives
- Cane swords
- Shirken or “Kung Fu stars”
Note: In 2019, New York repealed the ban on “Gravity Knives.” The common folding pocket knife is no longer a per se weapon under State law.
2. The “Dangerous Knife” & Intent
The law also covers items that aren’t on the “illegal” list but become illegal based on how they are used or perceived:
(2) He possesses any dagger, dangerous knife, dirk, razor, stiletto, or any other dangerous or deadly instrument or weapon with intent to use the same unlawfully against another.
3. What Defines a “Dangerous Knife”?
The courts (Matter of Jamie D.) have established three ways a tool becomes a “dangerous knife”:
- Characteristics: Is it designed primarily as a weapon (e.g., a double-edged boot knife)?
- Modification: Have you ground down a kitchen utensil into a shank?
- Circumstances: Do the facts of the encounter reveal that the possessor considers it a weapon and not a utilitarian tool?
4. The Presumption of Intent
This is the thorny part. PL 265.15(4) dictates that simple possession of a dagger, dirk, stiletto, or dangerous knife is presumptive evidence of intent to use it unlawfully.
In plain English: If you are carrying a blade designed for combat and you find yourself in a police encounter, the law allows the officer to “presume” your intent is unlawful. This is circular reasoning—the knife is only illegal if you have intent, but carrying it proves the intent.
The Practitioner’s Takeaway
If you carry a knife for utility, choose a tool that looks like a tool. A bright-colored folding knife used for work is viewed differently than a blacked-out tactical dagger.
As a professional, my advice remains the same as it was a decade ago: Stay out of trouble. If you stay away from the people, places, and situations that attract police attention, your pocket tool remains exactly that—a tool. If you are looking for a fight, the law is designed to give the police the tools to stop you before it starts.
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