Yes, stun guns are legal in Maryland. Any adult 18 or older who has no disqualifying convictions can buy, carry, and use a stun gun or Taser without a permit, as long as the device is used only for self-defense and kept out of the places where state, local, or federal law forbids it.1Maryland General Assembly. Maryland Criminal Law Code 4-109 – Electronic Control Devices Maryland groups these devices under the label “electronic control device,” and while the ownership rules are loose, the rules on where you can carry one and how you can use it are tighter than most buyers realize.
Who Qualifies to Own One
Two conditions apply. You must be at least 18, and you must have never been convicted of a disqualifying offense.1Maryland General Assembly. Maryland Criminal Law Code 4-109 – Electronic Control Devices
The disqualifying list has two parts. Anyone convicted of a Maryland “crime of violence” is permanently barred. That category covers murder, manslaughter (other than involuntary), rape, robbery, carjacking, kidnapping, first-degree arson, and several serious assault and sexual offenses. Convictions for drug manufacturing, distribution, or trafficking under specified sections of Maryland’s drug laws also disqualify you.1Maryland General Assembly. Maryland Criminal Law Code 4-109 – Electronic Control Devices There is no waiting period or restoration process. “Never been convicted” is literal.
The Background Check at Purchase
Before a stun gun is sold and activated in Maryland, the manufacturer or seller must run a state and federal criminal history check on the buyer. The seller also has to supply an instruction manual or an audio or video equivalent, and the manufacturer must keep a record of the original purchaser and give law enforcement prompt access to sales records for devices and cartridges sold in the state.1Maryland General Assembly. Maryland Criminal Law Code 4-109 – Electronic Control Devices If you buy a projectile Taser, every cartridge is traceable back to you through those records.
Where You Cannot Carry
With no permit required, you can carry a stun gun openly or concealed in most public spaces. The exceptions come from three different layers of law.
Public Schools
Maryland law bans carrying a firearm, knife, or “deadly weapon of any kind” on public school property.2Maryland General Assembly. Maryland Criminal Law Code 4-102 – Deadly Weapons on School Property The statute doesn’t name stun guns, but the “of any kind” language is broad enough that one almost certainly qualifies. A violation is a misdemeanor carrying up to three years in prison and a $1,000 fine. Keep your device off school campuses, school events, and school-adjacent property.
Federal Buildings
Federal law prohibits bringing any “dangerous weapon” into a building owned or leased by the federal government where federal employees work. Post offices, Social Security offices, and federal courthouses all count. Possession in a general federal building carries up to one year in prison; in a federal courthouse, up to two years; with intent to commit a crime, up to five.3Office of the Law Revision Counsel. 18 U.S. Code 930 – Possession of Firearms and Dangerous Weapons in Federal Facilities
State and Local Restrictions
Maryland cities and counties have explicit authority to adopt stun gun rules stricter than state law.1Maryland General Assembly. Maryland Criminal Law Code 4-109 – Electronic Control Devices Baltimore, for example, bans stun guns in public schools and certain public buildings, and prohibits possession by anyone under a domestic violence restraining order or anyone who has been treated for mental illness. Check your city or county ordinances before assuming a given location is clear. State law also restricts weapons in government buildings, polling places, colleges, and some utility facilities.
The Rules for Using One
Maryland limits stun gun use to self-defense, and the state’s self-defense framework comes from case law. To claim self-defense successfully, you need all four of these:
- Reasonable grounds to believe you faced immediate danger of death or serious bodily harm
- A genuine belief at the time that you were in that danger
- No role in starting or provoking the confrontation
- No more force than the situation required4Maryland General Assembly. Fiscal and Policy Note for House Bill 1214
Fail on any one element and the claim collapses.
Duty to Retreat
Maryland follows a duty-to-retreat rule in public. If you can safely walk away, you’re expected to. The castle doctrine is the carve-out: inside your own home, you have no duty to retreat and can use reasonable force against an intruder.4Maryland General Assembly. Fiscal and Policy Note for House Bill 1214 Deploying a stun gun during a parking lot argument you could have walked away from is a much weaker claim than deploying one against someone forcing their way into your house. Retreat isn’t required if it would put you in greater danger, but if it was obviously available, a prosecutor will ask why you didn’t take it.
Proportional Force
A stun gun is generally treated as less-than-lethal, which gives you more flexibility than a firearm would. That doesn’t make it automatically proportional. Deploying one on someone who shoved you once and backed off, or on someone who is only yelling, is likely to be viewed as excessive. Even brandishing a stun gun in a menacing way during a verbal dispute can support an assault charge.
Penalties If You Break the Rules
The penalty scale has two tiers.
Simple illegal possession or use, which covers underage possession, possession by a disqualified person, or any use outside legitimate self-defense, is a misdemeanor punishable by up to two months in jail, a fine of up to $500, or both.1Maryland General Assembly. Maryland Criminal Law Code 4-109 – Electronic Control Devices
Possession or use of a stun gun during the commission of a crime of violence is a felony punishable by up to three years in prison, a fine of up to $5,000, or both. That felony charge stacks on top of the charges from the underlying crime.1Maryland General Assembly. Maryland Criminal Law Code 4-109 – Electronic Control Devices The jump from a two-month misdemeanor to a three-year felony is driven entirely by context.
Flying With a Stun Gun
You cannot bring a stun gun in your carry-on luggage. The TSA bans all stun guns and shocking devices from the cabin. Checked baggage is allowed, but the device must be stored so it can’t discharge during transport, and lithium battery rules apply if your model uses them. The TSA officer at the checkpoint has final authority on any specific item.5Transportation Security Administration. Stun Guns/Shocking Devices
Your destination state may have very different rules. Several states ban or heavily restrict civilian possession, so verify the law wherever you’re landing and wherever you’re laying over before you pack.
Civil Lawsuits Are a Separate Risk
Even without criminal charges, the person you stunned can sue you for battery. A civil case uses a lower burden of proof than a criminal case, so you can avoid prosecution and still lose the lawsuit. Maryland’s self-defense doctrine offers some civil protection, but it isn’t absolute. If a court finds your use of force unreasonable or disproportionate, you can be ordered to pay medical bills, pain and suffering, and potentially emotional distress damages. Use the device only when you have no better option, and stop the moment the threat ends.