California Penal Code §21810 — Manufacture, Sale, or Possession of Metal Knuckles
PC §21810 makes it a wobbler to manufacture, import, keep for sale, offer or expose for sale, give, lend, or POSSESS metal knuckles (including composite/plastic 'brass knuckles' under PC §16920). Misdemeanor exposure up to 1 year county jail; felony exposure of 16 months, 2, or 3 years under PC §1170(h). The 'possession' prong sweeps far broader than manufacture/sale — mere personal possession triggers the same wobbler exposure.
Reviewed by Daniel S. Rubin, CA Bar 302093 · Los Angeles Criminal Defense Attorney · Manufacture, Sale, or Possession of Metal Knuckles Cases in All LA County Courts
01 — Quick Facts
PC §21810 — Manufacture, Sale, or Possession of Metal Knuckles at a Glance
| Fact | Detail |
|---|---|
| Full Name | California Penal Code §21810 — Manufacture, Sale, or Possession of Metal Knuckles |
| Code Type | Penal Code (PC) |
| Classification | Wobbler (misdemeanor or felony) |
| Misdemeanor Penalty | Up to 1 year county jail |
| Felony Penalty | 16 months, 2, or 3 years county jail (§1170(h)) |
| Controlling Definition | PC §16920 — metal knuckles defined as any device or instrument made wholly or partially of metal worn for offensive/defensive purposes intended to strike another with the fist |
| Mens Rea Standard | General intent (Rubalcava) + In re Jorge M. knowledge gloss |
| Firearm Rights | §29805 10-yr (misdo) / §29800 lifetime + §922(g)(1) (felony) |
| Free Consultation | (213) 723-2337 — 24/7 |
01 — What Is PC §21810?
What Is California Penal Code §21810?
PC §21810 Reads:
"California Penal Code §21810 prohibits the manufacture, importation, keeping for sale, offering or exposing for sale, giving, lending, or possession of any item within its scope. Penalty tracks the wobbler / felony structure under PC §1170(h)."
— California Penal Code §21810 (paraphrased)
PC §21810 — Manufacture, Sale, or Possession of Metal Knuckles — is part of California's weapons-regulation framework. It is prosecuted by the LA County District Attorney and, where applicable, the U.S. Attorney's Office. The controlling definition is PC §16920 — metal knuckles defined as any device or instrument made wholly or partially of metal worn for offensive/defensive purposes intended to strike another with the fist. The general-intent mens rea standard from People v. Rubalcava (2000) 23 Cal.4th 322 applies; In re Jorge M. (2000) 23 Cal.4th 866 supplies the knowledge-of-character gloss.
Statutory Definition — PC §16920
The §21810 definition is the pivotal element in every prosecution. Rubin Law, P.C. defends by challenging the definition at preliminary hearing (§995 dismissal), litigating Fourth Amendment suppression (§1538.5), and negotiating §17(b) wobbler reduction or §1170(h) split sentencing.
Item Within §21810 Definition
Full statutory exposure — wobbler up to 3 years
Item Outside §21810 Definition
Case dismissed — no §21810 violation.
Why the §21810 Definition Drives Defense
The §16920 definition, §17(b) wobbler reduction, and Fourth Amendment suppression drive these cases.
Official Sources
02 — Elements of the Crime
Elements the Prosecution Must Prove Under PC §21810
The prosecution must prove each of the following beyond a reasonable doubt.
Instrument Is Metal Knuckles Under §16920
Device made wholly or partially of metal (or under §16920 including composite/plastic variants) worn or carried in or on the hand for offensive or defensive purposes to strike another with the fist protected.
Prohibited Conduct
Manufacture, import, keep for sale, offer/expose for sale, give, lend, or POSSESS. Possession alone is enough.
Knowing Possession
Defendant knew of the item's presence and its character as knuckles.
04 — Penalties
Penalties for PC §21810 Manufacture, Sale, or Possession of Metal Knuckles in California
§21810 is a wobbler with distinct misdemeanor and felony tracks.
| Charge | Code | Prison Term | Probation | Strike |
|---|---|---|---|---|
| Misdemeanor §21810 | PC §21810 | Up to 1 year county jail | Standard | No |
| Felony §21810 (§1170(h)) | PC §21810 | 16 months, 2, or 3 years county jail | Available | No |
| Concurrent §29800(a)(1) | PC §29800(a)(1) | 16 months, 2, or 3 years — if prior felony | Rare | No |
| Concurrent §245(a)(1) if used offensively | PC §245(a)(1) | Up to 4 years — strike | Available | Yes |
| Gang Enhancement | PC §186.22(b) | Adds 2, 3, or 4 years | Rare | Yes |
Enhancements That Increase §21810 Exposure
School Grounds
PC §626.10 / §626.9
Weapon on school grounds — separate wobbler or felony exposure up to 5 years.
Courthouse / Airport
PC §171b / 49 USC §46505
Weapon in courthouse or airport — separate state wobbler and federal 10-year exposure.
Gang Predicate
PC §186.22(b)
Adds 2-4 years and converts to strike.
Prior Convictions
PC §667.5(b)
Prior prison priors support enhanced sentencing on felony filing.
Offensive Use
PC §245(a)(1)
Weapon used offensively supports felony assault + strike.
Beyond the Sentence
- Weapon forfeiture and destruction
- PC §29805 10-year firearm prohibition on misdemeanor conviction; §29800 lifetime prohibition on felony conviction
- Federal 18 USC §922(g) firearm prohibition on felony conviction
- Immigration consequences under 8 USC §1227(a)(2)(C) on felony weapons conviction — case-specific analysis
- Employment and professional-license consequences
- TSA / travel disclosure consequences
Sentencing References
05 — Defense Strategies
How Rubin Law Defends PC §21810 Manufacture, Sale, or Possession of Metal Knuckles Charges
§21810 defenses focus on statutory-definition challenges, mens rea, and Fourth Amendment suppression.
Statutory Definition Challenge
Prosecution must prove the item meets the specific statutory definition (PC §16920 — metal knuckles defined as any device or instrument made wholly or partially of metal worn for offensive/defensive purposes intended to strike another with the fist). Case-specific expert-witness examination frequently defeats the classification.
PC §21810
No Knowing Possession
In re Jorge M. and constructive-possession case law — item planted, borrowed jacket, shared vehicle, or third party's bag. Defendant lacked knowledge of item's presence or character.
In re Jorge M.
Constructive-Possession Defense
Shared vehicle, third-party bag, roommate's property. People v. Sifuentes constructive-possession analysis.
People v. Sifuentes
Fourth Amendment Suppression
Warrantless search, Terry-stop overreach, Rodriguez prolongation, pretextual search of vehicle or bag. PC §1538.5 motion to suppress.
PC §1538.5
Statutory Exemption
Licensed dealer, manufacturer, law enforcement, antique / museum, or common-carrier exemption where applicable to the specific weapon.
Statutory Exemption
Functionality / Inert Item
Item is non-functional, inert, novelty, or replica lacking statutory operational characteristics. Expert-witness examination.
PC §21810
PC §17(b) Wobbler Reduction
Reduce felony filing to misdemeanor at preliminary hearing, sentencing, or after successful probation. Common on first-offense weapons filings.
Constitutional Sources
07 — Court Process
How PC §21810 Manufacture, Sale, or Possession of Metal Knuckles Cases Move Through Los Angeles Courts
§21810 cases follow the weapons-prosecution track with heavy motion practice.
- 1
Step 1 — Police Encounter
Cases arise from traffic stops with pat-down, probation searches, TSA / courthouse screening, and consent searches of vehicle or residence.
- 2
Step 2 — Instrument / Firearm Examination
LAPD SID / LASD firearms unit inspects the item and confirms statutory-definition elements. Expert reports frequently disputed at preliminary hearing.
- 3
Step 3 — Filing Decision
DA reviews wobbler misdemeanor vs. felony filing based on prior record, offense circumstances, and location.
- 4
Step 4 — Motion Practice
PC §1538.5 suppression, §995 dismissal on statutory-definition defense, In re Jorge M. mens-rea challenges, and (where applicable) §17(b) wobbler reduction.
- 5
Step 5 — Preliminary Hearing
Statutory-definition testimony, possession-knowledge testimony, and Fourth Amendment record all litigated at prelim.
- 6
Step 6 — Resolution
Dismissal on definition defense, §17(b) reduction, probation plea, or trial.
Los Angeles Courts That Handle PC §21810 Manufacture, Sale, or Possession of Metal Knuckles Cases
§21810 cases are prosecuted at LA County criminal courthouses.
Reviewed by Your Attorney
Daniel S. Rubin — Los Angeles Manufacture, Sale, or Possession of Metal Knuckles Defense Attorney
Daniel S. Rubin has defended clients charged with manufacture, sale, or possession of metal knuckles and related offenses in Los Angeles County courts — including Clara Shortridge Foltz, Van Nuys, Compton, and Pomona. He understands that these cases are won in the details: the suppression hearing that eliminates key evidence, the preliminary hearing cross-examination that exposes a weak witness, the penalty phase argument that keeps a client out of the worst outcome.
This page was written and reviewed by Daniel A. Rubin, Los Angeles criminal defense attorney, CA State Bar 302093, with 10+ years of experience defending clients charged under PC §21810 in Los Angeles County. Last reviewed: July 2026.
CA Bar 302093 | Whittier Law School | Rising Star — Super Lawyers 2019–2023 | Manufacture, Sale, or Possession of Metal Knuckles Cases Throughout LA County
See our full Manufacture, Sale, or Possession of Metal Knuckles defense practice
09 — FAQs
PC §21810 Manufacture, Sale, or Possession of Metal Knuckles Questions — Los Angeles
What is the penalty for PC §21810?
PC §21810 is a wobbler. Misdemeanor exposure is up to 1 year county jail; felony exposure is 16 months, 2, or 3 years county jail under PC §1170(h). PC §17(b) reduction to misdemeanor is available at preliminary hearing, sentencing, or after successful probation.
What is the statutory definition for PC §21810?
The controlling definition is PC §16920 — metal knuckles defined as any device or instrument made wholly or partially of metal worn for offensive/defensive purposes intended to strike another with the fist. The specific-item definition is the single most important element — case-specific expert-witness examination frequently defeats prosecution's classification.
Does §21810 require intent to use the item as a weapon?
No. California weapons-possession statutes are general-intent crimes. People v. Rubalcava (2000) 23 Cal.4th 322 (§21310) and its progeny hold the prosecution need only prove knowing possession. Some mens-rea gloss under In re Jorge M. (knowledge of the item's character) survives.
What counts as 'possession' under §21810?
Actual or constructive possession. Actual possession = item on person or in immediate control. Constructive possession = dominion and control over the location where the item was found, with knowledge of its presence. People v. Sifuentes constructive-possession analysis applies.
Are there statutory exemptions for §21810?
Yes — licensed dealer / manufacturer / importer, law enforcement, and (for certain items) antique / museum / common-carrier exemptions apply. Exemption analysis is item-specific and requires careful review of the applicable prohibitory statute and its cross-referenced exemption sections.
Can §21810 be resolved without a felony conviction?
Yes. Wobbler §21810 filings frequently resolve as misdemeanors through §17(b) reduction, dismissal on statutory-definition defense, or diversion (case-specific).
What are the immigration consequences of a §21810 conviction?
A felony weapons conviction may qualify as an aggravated felony under 8 USC §1101(a)(43)(E) and trigger removability under 8 USC §1227(a)(2)(C). Non-citizen defendants should confirm status-specific consequences under Padilla v. Kentucky before entering any plea.
What are the firearm-rights consequences of a §21810 conviction?
Misdemeanor conviction triggers a 10-year California firearm prohibition under PC §29805. Felony conviction triggers a LIFETIME California firearm prohibition under PC §29800 and a federal firearm prohibition under 18 USC §922(g)(1). PC §17(b) reduction and PC §1203.4 dismissal do NOT restore federal firearm rights.
Available 24/7 — Free Consultation
Charged Under PC §21810 Metal Knuckles?
The §16920 definition, §17(b) wobbler reduction, and Fourth Amendment suppression drive these cases. Call Rubin Law, P.C. — free consult (213) 723-2337.