Maryland Dangerous Weapon Laws: Carry Rules and Penalties

Maryland’s dangerous weapon laws, set out in Criminal Law § 4-101, make it a misdemeanor to carry certain listed weapons concealed on your person, or to carry any dangerous weapon openly with the intent to injure someone unlawfully. A conviction can bring up to three years in jail, a fine of up to $1,000, or both.¹ The statute also carves out exceptions for law enforcement, people with a Maryland wear-and-carry permit, and anyone who can show the weapon was a reasonable precaution against a specific danger.

What Maryland Treats as a Dangerous Weapon

Section 4-101 names dirk knives, bowie knives, switchblade knives, star knives (the multi-bladed throwing weapons sometimes called shuriken), sandclubs, metal knuckles, razors, and nunchaku.¹ The statute uses the word “includes,” so the list is not exhaustive. Courts can treat other objects as dangerous weapons based on their design and how they are used.

Two things are explicitly left out. Handguns are governed by separate firearms statutes with their own permitting rules. Penknives without a switchblade mechanism are also excluded, which means a standard folding pocket knife is not a “weapon” under this section.¹ Someone stopped with a regular folding knife is in a very different legal position than someone carrying a switchblade.

An everyday object that isn’t on the list can still be treated as a dangerous weapon if someone uses it, or intends to use it, to hurt another person. Courts look at how the object was held, whether it was modified, and whether the person made threats while carrying it. A heavy flashlight swung at someone’s head can fall within the statute even though flashlights are not listed.

Concealed vs. Open Carry

Maryland has two separate prohibitions. First, no one may carry a dangerous weapon concealed on or about their person. Second, no one may carry a dangerous weapon openly with the intent to injure someone unlawfully.¹ The concealed-carry ban has no intent requirement. Simply hiding the weapon on your person or within easy reach is enough. The open-carry ban only applies when prosecutors can prove you meant to use the weapon against someone.

“On or about the person” means close enough to grab and use immediately. A bowie knife in a jacket pocket or tucked into a waistband clearly qualifies. A weapon in the glove compartment or under the driver’s seat is more ambiguous, but it is typically treated as concealed if it is within reach and hidden from an ordinary observer. A weapon locked in the trunk, separated from the passenger compartment, is generally viewed differently because it is not readily available for use.

Pepper Spray and Chemical Sprays

Pepper spray, chemical mace, and tear gas devices sit outside the § 4-101 definition of “weapon.” The blanket ban on concealed carry doesn’t reach them, so you can lawfully carry pepper spray concealed for self-defense.² What you cannot do is carry those products openly with the intent to injure someone unlawfully. The statute names them specifically in its open-carry prohibition.¹ Carrying for personal protection is fine. Brandishing while threatening someone is not.

Who Is Exempt

Section 4-101(b) lists four categories of people who may lawfully carry weapons that would otherwise be banned:

State, county, and municipal law enforcement officers and other conservators of the peace entitled or required to carry a weapon as part of their official duties, including officers visiting temporarily from another state.
Railroad special agents acting in the course of their duties.
Anyone holding a valid Maryland wear-and-carry permit issued under Title 5, Subtitle 3 of the Public Safety Article. By the plain language of § 4-101(b)(3), the exemption covers the listed dangerous weapons, not just handguns.²
A person carrying a weapon as a reasonable precaution against a specific apprehended danger. This is a defense raised after the fact, and a judge decides whether the danger was real enough and the response proportionate. Relying on it is inherently risky.

Extra Rules for Minors

In twelve Maryland counties, minors cannot carry a dangerous weapon, concealed or not, between one hour after sunset and one hour before sunrise. The counties are Anne Arundel, Baltimore, Caroline, Cecil, Harford, Kent, Montgomery, Prince George’s, St. Mary’s, Talbot, Washington, and Worcester.² Exceptions cover minors on a legitimate hunting trip, traveling to or from a trap shoot or sporting event, or participating in an organized civic or military activity. Outside those counties, the general concealed-carry and intent-to-injure prohibitions still apply to minors, but there is no separate nighttime ban.

Weapons on School Property

Section 4-102 is broader than § 4-101. It prohibits carrying or possessing any firearm, knife, or deadly weapon on public school property, not just the items specifically listed in the dangerous weapon statute.³ The ban covers school buildings, surrounding grounds, and school-operated vehicles like buses, and it applies whether school is in session or not.

Five categories of people are exempt:

On-duty law enforcement officers in the regular course of their duties.
Off-duty or retired law enforcement officers who are parents, guardians, or visitors of a student, provided they display their badge or credential, carry the weapon concealed, and are authorized to carry a concealed handgun in Maryland. All three conditions must be met at once.⁴
School security personnel hired by the county board of education specifically to guard school property.
Participants in organized shooting activities conducted for educational purposes.
Historical demonstrators with a written invitation from the school principal to display or use a weapon or replica for educational purposes.

Penalties

Both the general dangerous weapon statute and the school property statute carry the same baseline penalty: a misdemeanor conviction punishable by up to three years in jail, a fine of up to $1,000, or both.¹³ Carrying a handgun on school property is sentenced instead under the separate handgun provisions in Subtitle 2 of Title 4, which carry stiffer consequences.⁴

What a sentence actually looks like depends on whether the weapon was used, the defendant’s record, and whether the state can prove intent. Defense arguments often focus on the visibility of the weapon, lack of intent to harm, or one of the statutory exemptions.

Record and Firearm Consequences

A conviction leaves a permanent criminal record that can disqualify you from certain jobs, professional licenses, and government positions. For anyone holding or seeking a federal security clearance, even an arrest for a weapon offense can trigger a review under the federal adjudicative guidelines for criminal conduct.

A standard misdemeanor weapon conviction does not automatically bar you from buying or owning a firearm under federal law. The federal prohibition generally reaches felony convictions and misdemeanor convictions that qualify as domestic violence offenses involving a spouse, partner, or other protected relationship.⁵ A conviction for concealing a bowie knife, standing alone, would not trigger that federal bar. If the same charge arose from a domestic incident, the analysis changes.

Federal Laws That May Also Apply

Switchblade Knives

Federal law separately restricts switchblade knives through the Federal Switchblade Act (15 U.S.C. §§ 1241–1245). It prohibits manufacturing, transporting, or distributing switchblade knives in interstate commerce. “Switchblade knife” means any knife with a blade that opens automatically by hand pressure on a button or by inertia or gravity.⁶ Violations carry up to five years in federal prison, a fine of up to $2,000, or both.⁷ The exceptions are narrow: armed forces personnel and contractors, common carriers transporting knives in the ordinary course of business, and individuals with only one arm carrying a switchblade with a blade of three inches or less.⁸ There is no federal “safe passage” provision for carrying switchblades through states where they are prohibited.

Federal Buildings

Federal buildings in Maryland, including courthouses, Social Security offices, and federal office complexes, are governed by 18 U.S.C. § 930, which prohibits possessing any dangerous weapon or firearm inside a federal facility. The federal definition is broad: any device or instrument capable of causing death or serious bodily injury, except a pocket knife with a blade under 2½ inches.⁹ Penalties scale with the facility and intent:

General federal facility, no criminal intent: up to one year in federal prison, a fine, or both.
Federal facility, intent to commit a crime: up to five years, a fine, or both.
Federal court facility: up to two years, a fine, or both.

Exemptions cover federal officers and armed forces members acting in their official capacity, state and local law enforcement performing authorized duties, and individuals lawfully carrying weapons for hunting or other lawful purposes.⁹ Federal law also requires the prohibition to be posted at public entrances; a conviction cannot stand if the facility lacked posted notice and the person had no actual knowledge of the restriction.

1
Maryland General Assembly. Maryland Code Criminal Law 4-101 – Dangerous Weapons
2
Maryland General Assembly. Maryland Code Criminal Law 4-101 – Dangerous Weapons
3
Maryland General Assembly. Maryland Code Criminal Law 4-102 – Deadly Weapons on School Property
4
Maryland General Assembly. Maryland Code Criminal Law 4-102 – Deadly Weapons on School Property
5
Bureau of Alcohol, Tobacco, Firearms and Explosives. Misdemeanor Crimes of Domestic Violence Prohibitions
6
Office of the Law Revision Counsel. 15 USC 1241 – Definitions
7
Office of the Law Revision Counsel. 15 USC 1242 – Introduction, Manufacture for Introduction, Transportation, or Distribution in Interstate Commerce Prohibited
8
Office of the Law Revision Counsel. Chapter 29 – Manufacture, Transportation, or Distribution of Switchblade Knives
9
Office of the Law Revision Counsel. 18 USC 930 – Possession of Firearms and Dangerous Weapons in Federal Facilities