California Penal Code 16590 PC: Generally Prohibited Weapons

Under Penal Code 16590 PC, it is illegal to manufacture, import, sell, give, lend, or possess any weapon classified as a "generally prohibited weapon."

This omnibus statute compiles a master list of dangerous weapons—ranging from concealed blades and disguised firearms to martial arts equipment and military-style explosives—that the California Legislature has deemed too hazardous for public possession.

While Penal Code 16590 PC defines what constitutes a prohibited weapon, individual acts involving these items (such as manufacturing or possessing them) are punished under specific penal codes cross-referenced within the statute.

Quick Reference Summary: PC 16590 at a Glance

Legal Category	Statutory Standard & Guidelines
Primary Statute	California Penal Code Section 16590 PC
Offense Classification	"Wobbler" (can be charged as a Misdemeanor or a Felony)
County Jail Exposure (Misdemeanor)	Up to 1 year in county jail and fines up to $1,000
State Prison Exposure (Felony)	16 months, 2 years, or 3 years in county jail (under PC 1170(h))
Primary Elements to Prove	1. Direct or indirect possession, manufacture, importation, or sale of a prohibited item. 2. Knowledge that the item was present and had the characteristics of a dangerous weapon.
Key Exemptions	Law enforcement officers, military personnel, licensed forensic labs, historical societies/museums, or antique/curio collectors.

Penalties and Sentencing Options

Violations involving weapons listed under PC 16590 are classified as "wobbler" offenses in California.

This means prosecutors have the discretion to charge the crime as either a misdemeanor or a felony depending on your prior criminal record and the specific circumstances of the case.

Misdemeanor Penalties

If convicted of a misdemeanor violation under PC 16590, penalties include:

Up to 1 year in county jail
Summary (informal) probation
Fines up to $1,000 plus court fees

Felony Penalties

If prosecutors file the charge as a felony, penalties increase significantly to:

16 months, 2 years, or 3 years served in county jail under California Penal Code 1170(h)
Formal felony probation
Fines up to $10,000

Additional Consequences

Loss of Gun Rights: A felony conviction under PC 16590 results in a lifetime restriction on owning, receiving, or possessing firearms under California Penal Code 29800 PC.
Immigration Consequences: Felony convictions involving dangerous weapons or explosives may lead to deportation or inadmissibility for non-U.S. citizens.
Expungement Eligibility: Upon successful completion of probation or your jail term, you may petition the court to have the conviction expunged under Penal Code 1203.4 PC.

Master List of Weapons Prohibited Under PC 16590

The prohibited items listed under PC 16590 fall into five primary categories:

1. Disguised & Concealed Knives

Air gauge knives (PC 20310)
Ballistic knives (PC 21110)
Belt buckle knives (PC 20410)
Cane swords (PC 20510)
Concealed dirks or daggers (PC 21310)
Lipstick case knives (PC 20610)
Shobi-zues (staff or rod concealing a blade) (PC 20710)
Writing pen knives (PC 20910)

2. Banned Firearms & Related Equipment

Cane guns, wallet guns, or zip guns (PC 24410, 24710, 33600)
Short-barreled rifles or shotguns(PC 33215)
Undetectable or unidentifiable firearms (PC 24510, 24610)
Unconventional pistols (PC 31500)
Camouflaging firearm containers (PC 24310)
Multiburst trigger activators (PC 32900)
Large-capacity magazines (PC 32310)

3. Martial Arts & Impact Weapons

Brass or metal knuckles(PC 21810)
Shurikens / Throwing stars (PC 22410)
Nunchakus(PC 22010)
Leaded canes, batons, blackjacks, slingshots, saps, or sandbags (PC 22210)

4. Banned Ammunition & Explosives

Ammunition containing flechette darts (PC 30210)
Bullets carrying explosive agents(PC 30210)
Concealed explosive substances (PC 19100)
Metal military practice or replica hand grenades (PC 19200)

Elements of the Offense: What Prosecutors Must Prove

To secure a conviction for possessing or manufacturing a prohibited weapon under PC 16590, the prosecution must prove the following elements beyond a reasonable doubt:

Active Conduct: You manufactured, imported into California, kept for sale, offered for sale, gave, lent, or possessed a weapon listed under PC 16590.
Knowledge of the Item: You knew that you possessed, manufactured, or imported the object.
Knowledge of Character: You knew that the item had the specific characteristics that make it a prohibited weapon (e.g., you knew a cane contained a hidden blade).

Crucial Legal Distinction: Intent to use the weapon is not required. You can be convicted simply for knowingly possessing or carrying a banned item, even if you never intended to hurt anyone or only kept it as an antique or for personal defense.

Real-World Example

Scenario: Jordan buys a vintage walking stick at a swap meet to add to his home decor collection. Unbeknownst to Jordan, twisting the handle unlocks a hidden 10-inch blade, making the item a cane sword under California law (PC 20510). During a routine traffic stop, police search Jordan's vehicle and discover the cane sword in his back seat.

Legal Outcome:

If Jordan did not know the walking stick concealed a hidden blade, his criminal defense lawyer can assert a Lack of Knowledge defense. Because he lacked knowledge of the item's prohibited nature, he is not guilty under PC 16590.
If Jordan knew the handle detached to reveal a blade, he could be charged under PC 16590, even if he only intended to display it at home as an antique.

Primary Defense Strategies

Defense attorneys commonly use several strategies to contest PC 16590 charges:

Lack of Knowledge: Establishing that you were unaware of the item's presence or did not know it had features that made it legally prohibited.
Item Does Not Meet Statutory Definition: Proving the weapon does not match the strict legal definitions in the statute (e.g., showing a knife blade length or mechanism falls outside the banned category).
Unlawful Search and Seizure (4th Amendment): If law enforcement recovered the weapon during an illegal detention, traffic stop, or warrantless search, defense counsel can file a Motion to Suppress Evidence under Penal Code 1538.5 PC.
Authorized Exemption: Demonstrating that you qualify under statutory exceptions (e.g., active law enforcement, military service, theatrical production, or licensed museum display).

Frequently Asked Questions

Are brass knuckles illegal to own in California even for self-defense?

Yes. Metal or brass knuckles are classified as generally prohibited weapons under PC 21810. Possessing them for personal protection or self-defense is not a valid legal defense under California law.

Can I be charged under PC 16590 for owning a novelty or collectible item?

Yes. Items like belt buckle knives, lipstick case knives, or metal practice grenades are often sold as novelties or souvenirs. However, possessing them remains illegal under California law if you know what the item is.

Is a violation of Penal Code 16590 PC a felony or a misdemeanor?

PC 16590 offenses are "wobblers," meaning prosecutors can file them as either misdemeanors or felonies. The decision typically depends on your prior criminal record and the specific weapon involved.

Do I have to be carrying the prohibited weapon on my person to be arrested?

No. California law recognizes both actual possession (on your person) and constructive possession (having control over the location where the weapon is stored, such as in your car glove compartment or bedroom closet).

What happens if I bought a prohibited weapon legally in another state?

Bringing a prohibited weapon into California from another state constitutes illegal importation under PC 16590. Out-of-state legality does not exempt you from California's strict weapon laws once the item enters the state.

Can weapons charges under PC 16590 be reduced or dismissed?

Yes. Charges can be dismissed or reduced through defense negotiations, proof of lack of knowledge, successful Fourth Amendment suppression motions, or diversion programs when eligible.

Related California Weapon Laws

Charges under PC 16590 are frequently filed alongside or in lieu of other weapon statutes:

Carrying a Concealed Dirk or Dagger (PC 21310): Carrying any fixed or locked stabbing weapon hidden on your person.
Possession of a Switchblade Knife (PC 21510): Carrying or possessing a spring-blade or gravity knife with a blade 2 inches or longer.
Carrying a Concealed Firearm (PC 25400): Carrying an unlicensed concealed firearm in a vehicle or on your person.
Carrying a Loaded Firearm in Public (PC 25850): Carrying a loaded gun on your person or in a vehicle in a public place.
Brandishing a Weapon (PC 417): Drawing, exhibiting, or threatening someone with a deadly weapon in a rude or angry manner.
Felon in Possession of a Firearm (PC 29800): It is a distinct felony for any convicted felon to own, purchase, or possess any firearm.

Speak to a California Weapons Defense Attorney

A conviction under Penal Code 16590 PC can result in significant jail time, costly fines, and a permanent criminal record. Because prohibited weapon laws involve technical legal definitions, forensic examination, and constitutional search issues, seeking early legal representation is essential.

An experienced criminal defense lawyer can evaluate the evidence, determine whether police violated your rights, and build a strong defense strategy to seek reduced or dismissed charges.

For an expert breakdown of which everyday novelties and items fall under this law, watch Penal Code 16590 PC Explained. This quick video clarifies how easily novelty items can lead to serious criminal charges under California's prohibited weapons statutes.

Prohibited Weapons