Penalties for an unlicensed firearm charge run from a first-offense misdemeanor at the state level to 15 years or more in federal prison. Which end of that range you land on depends on four things: whether you’re charged under state or federal law, whether you’re legally allowed to possess a firearm at all, what you were doing when the gun was found, and your criminal history. The gun itself matters too, because certain weapons carry their own mandatory sentences on top of whatever you were already facing.
State Charges vs. Federal Charges
Most unlicensed carry cases are state cases, and what counts as “unlicensed” depends entirely on where you are. As of 2026, 29 states have adopted constitutional carry laws, meaning residents who are not otherwise prohibited can carry a firearm without a government-issued permit. In the remaining states, carrying without the required concealed carry or handgun permit is a criminal offense, typically a misdemeanor for a first violation but sometimes a felony depending on the circumstances and jurisdiction.
Federal law takes a different angle. The federal licensing requirement is aimed at the firearms business, not the individual carrier. It is illegal for anyone except a licensed importer, manufacturer, or dealer to engage in the business of dealing in firearms.1Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts If you’re regularly buying and reselling firearms for profit without a federal firearms license, you’re violating federal law regardless of whether your state requires a personal carry permit. Most violations of the federal firearms chapter that don’t fall into a more specific penalty category carry up to five years in prison and a fine.2Office of the Law Revision Counsel. 18 USC 924 – Penalties
When You’re Not Allowed to Possess a Firearm at All
The permit question becomes irrelevant if you’re a prohibited person. Federal law identifies nine categories of people who cannot legally possess any firearm or ammunition under any circumstances, no matter what state they live in or what permits they hold.3Bureau of Alcohol, Tobacco, Firearms and Explosives. Identify Prohibited Persons They are:
- Anyone convicted of a crime punishable by more than one year in prison, whether or not they actually served that long
- Fugitives from justice
- Current users of controlled substances, including marijuana even in states where it’s legal
- Anyone formally adjudicated as mentally defective or involuntarily committed to a mental institution
- People unlawfully in the United States or admitted under most nonimmigrant visas
- Anyone discharged from the military under dishonorable conditions
- Former U.S. citizens who have formally renounced their citizenship
- Anyone subject to a qualifying domestic violence restraining order
- Anyone convicted of a misdemeanor crime of domestic violence
That last one catches many people off guard. Under the Lautenberg Amendment, even a misdemeanor assault conviction involving a family member triggers a lifetime federal firearms prohibition, and possession by someone in that category is a felony.4U.S. Marshals Service. Lautenberg Amendment If you’re a prohibited person caught with a firearm, you’re not looking at a permit violation. You’re looking at a federal felony.
The Armed Career Criminal Enhancement
This is where federal firearm penalties become truly severe. If you violate the prohibited-persons statute and you have three or more prior convictions for violent felonies or serious drug offenses committed on separate occasions, the Armed Career Criminal Act imposes a mandatory minimum of 15 years in federal prison. The judge has no discretion to go lower and cannot grant probation or suspend the sentence.2Office of the Law Revision Counsel. 18 USC 924 – Penalties About 15% of federal felon-in-possession defendants face a mandatory minimum penalty of some kind.5United States Sentencing Commission. Quick Facts – Felon in Possession of a Firearm
What Pushes the Penalty Higher
The Type of Gun
Some weapons carry their own penalties regardless of why you had them. Possessing an unregistered National Firearms Act item, which includes short-barreled rifles, short-barreled shotguns, silencers, and destructive devices, carries up to 10 years in prison and a fine of up to $10,000.6Office of the Law Revision Counsel. 26 USC 5871 – Penalties Possessing a machine gun manufactured after May 19, 1986 carries up to 10 years and a fine of up to $250,000.7Department of Justice. Summary of Federal Firearms Laws As of January 2026, the $200 federal tax that was traditionally required when registering NFA items like suppressors and short-barreled rifles has been reduced to zero, but ATF approval, registration, background checks, fingerprints, and photographs are still required. Possessing an unregistered NFA item remains a serious felony.
Where You Had It
Location changes everything. Under the Gun-Free School Zones Act, it is a federal crime to knowingly possess a firearm within 1,000 feet of a school.1Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts Federal buildings, courthouses, and other federal property trigger separate criminal exposure. State laws add their own location enhancements for places like bars, houses of worship, government buildings, and airports. These enhancements often transform what would otherwise be a misdemeanor carry offense into a felony.
What You Were Doing With It
If you possess, carry, or use a firearm during a crime of violence or a drug trafficking offense, federal law tacks mandatory consecutive prison sentences onto whatever the underlying crime carries. These sentences cannot run at the same time as any other sentence, and probation is not an option.2Office of the Law Revision Counsel. 18 USC 924 – Penalties The minimums escalate quickly:
- Possessing a firearm during the crime: 5 years, added consecutively
- Brandishing the firearm: 7 years
- Firing the weapon: 10 years
- Short-barreled rifle, short-barreled shotgun, or semiautomatic assault weapon: 10 years
- Machine gun, destructive device, or silencer: 30 years
- Second or subsequent offense: 25 years, or life if a machine gun, destructive device, or silencer was involved
If you’re convicted of a drug trafficking offense that carries five years and you had a standard handgun on you, the judge must add another five years for the gun alone. If it was a short-barreled shotgun, the mandatory add-on jumps to ten. These are floors, not ceilings, and stacking them against underlying sentences is how federal firearm cases routinely produce 20- or 30-year sentences.
Consequences Beyond Prison and Fines
A conviction for a firearm offense creates problems that often outlast any sentence.
A felony conviction for any firearm offense places you in the prohibited-persons category for life.1Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts Even a misdemeanor domestic violence conviction triggers the same lifetime ban. Getting caught with a firearm after that initial conviction exposes you to a second round of federal charges with steeper penalties.
For non-citizens, almost any firearm conviction is grounds for deportation. Federal immigration law makes any alien deportable who is convicted of purchasing, selling, possessing, or carrying a firearm or destructive device in violation of any law.8Office of the Law Revision Counsel. 8 USC 1227 – Deportable Aliens That language is broad enough to cover even minor state permit violations, and immigration judges have limited discretion once a qualifying conviction is established.
A weapons conviction also raises red flags with employers running background checks. For licensed professionals in fields like healthcare, law, education, and finance, a firearm conviction can trigger disciplinary proceedings that result in suspension or revocation of the license needed to work. Even convictions that have been expunged or deferred often must be disclosed to licensing boards.
Defenses That Come Up in These Cases
Not every firearm charge leads to a conviction. The right defense depends on the facts, but a handful appear in case after case.
The most frequently litigated issue is unlawful search and seizure. If police found the gun through an illegal traffic stop, warrantless search, or other Fourth Amendment violation, the firearm may be suppressed as evidence, and the prosecution’s case often collapses without it.
Lack of knowledge is the next most common. Constructive possession, where the gun is in a space you control rather than on your person, requires that you knew the firearm was there. If someone left a gun in your car without telling you, or you borrowed a bag that happened to contain a weapon, the prosecution has to prove you were aware of it. Related is the defense of no actual possession at all: being near a firearm is not the same as possessing it, and when a gun is found in a shared space like a house with multiple residents, the prosecution must connect you specifically to the weapon through evidence beyond proximity.
Sometimes the charge itself rests on a misunderstanding of the applicable licensing law, particularly when someone with a valid permit from one state is charged in another. Constitutional carry laws, reciprocity agreements, and federal preemption rules can all come into play.
Diversion and Restoring Firearm Rights
In the federal system, first-time offenders charged with less serious offenses may qualify for pretrial diversion. Prosecution is deferred while you complete a supervision period with conditions like community service, regular check-ins, and refraining from criminal activity. Successful completion results in dismissal of the charges.9United States Courts. Pretrial Diversion in the Federal Court System Not every firearm case qualifies, and the decision rests with the prosecutor, but a dismissed charge avoids the collateral consequences that follow a conviction.
If you’ve already been convicted and lost your firearm rights, federal law provides a narrow path back. A conviction that has been expunged, set aside, or pardoned, or one for which civil rights have been fully restored, is generally not treated as a disqualifying conviction for firearm purposes. The critical exception: if the expungement, pardon, or restoration order specifically says you still cannot possess firearms, the prohibition remains in place. The law of the state where the conviction occurred determines how these remedies are evaluated.1Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts Getting rights restoration wrong means risking a new federal charge for prohibited possession, so this is one place where legal advice matters more than any general summary.