Carrying a firearm while intoxicated is illegal in roughly two-thirds of U.S. states, and federal law adds a separate prohibition on gun possession by anyone who regularly uses controlled substances. State penalties usually start as misdemeanors and climb from there; federal charges are felonies from the first offense. The tricky part is that the definition of “intoxicated” shifts across state lines, and the rule reaches situations most gun owners don’t expect, including their own vehicles and their own homes.
How States Define Intoxication for Firearm Possession
If you assume the legal standard for carrying a firearm mirrors the 0.08% blood-alcohol concentration used for driving, you could be in for an unpleasant surprise. State approaches fall into three broad camps, and most set the bar lower than the driving limit or avoid a numeric threshold altogether.
The first approach is a “per se” standard. Any measurable amount of alcohol or a controlled substance in your system triggers a violation regardless of how you look or behave. You don’t need to stumble, slur your words, or fail a sobriety test. Biological presence alone is enough.
The second approach focuses on observable impairment. Prosecutors have to show you lost the normal use of your mental or physical abilities, and officers build that case through field sobriety tests and preliminary breath tests.1National Highway Traffic Safety Administration. DWI Detection and Standardized Field Sobriety Testing Refresher Instructor Guide
The third approach borrows the state’s drunk-driving BAC cutoff and applies it to firearm possession, so the number might be 0.08% or, in a handful of states, 0.10%.
This inconsistency matters if you travel with a firearm. A BAC that’s perfectly legal for carrying in one state could produce an arrest the moment you cross a border. And none of these standards are limited to alcohol. Most state laws extend to controlled substances, and many explicitly cover prescription medications that impair judgment or reaction time. If your prescription bottle warns against operating heavy machinery, that warning applies with equal force to handling a firearm.
What Counts as Possession
You don’t need to be holding a gun in your hand to face a charge. The law recognizes two forms of possession, and the less obvious one catches people off guard constantly.
Actual possession is straightforward. The firearm is on your body: in a holster, in your waistband, in your pocket, or in your hand. If you’re impaired and a weapon is physically on you, that’s the clearest path to a charge.
Constructive possession applies when the firearm isn’t on your person but you know it’s there and you can get to it. The legal test asks whether you had both knowledge of the object and the ability to control it.2Legal Information Institute. Constructive Possession A gun in your glove compartment, center console, backpack on the passenger seat, or under your car seat all qualify. Courts have refused to draw bright lines around locked containers; if you can reach the key and open the compartment from the driver’s seat, the weapon is within your immediate reach. Prosecutors focus on how quickly you could access and use the firearm, not whether you intended to.
Open carry versus concealed carry doesn’t change this analysis. Either way, you have dominion over the weapon, and that control is what creates the legal exposure.
Where the Prohibition Applies
Bars and restaurants that serve alcohol are the most common enforcement settings, for the obvious reason that drinking and firearms overlap in the same space. Many states flatly prohibit carrying firearms in any establishment that derives a significant portion of its revenue from alcohol sales, regardless of whether the person carrying is drinking.
Vehicles are next. A loaded firearm sitting in a center console while you’re driving home from a bar is the textbook scenario, but the charge can arise even when the vehicle is parked. The question is always whether you had access to the weapon while impaired.
Private property offers less protection than most people assume. The majority of states do not carve out a safe harbor for being intoxicated with a firearm in your own home. If you’re handling a weapon while impaired and anyone else is present, you can face the same charges you’d face on a public street. Narrow self-defense exceptions exist in some jurisdictions, but they’re hard to invoke when impairment is severe, and several state courts have held that self-defense is simply not a valid defense to the charge of possessing a weapon while intoxicated.
Federal Law and Controlled Substances
State laws target temporary intoxication. Federal law goes further by prohibiting firearm possession entirely for anyone who is a regular, unlawful user of controlled substances or who is addicted to them. Under 18 U.S.C. § 922(g)(3), it is illegal to possess any firearm or ammunition if you fall into that category.3Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts A violation carries up to 15 years in federal prison.4Office of the Law Revision Counsel. 18 USC 924 – Penalties
This isn’t about being drunk at the moment you pick up a gun. It’s about your pattern of substance use. If you regularly use an illegal drug, you are a “prohibited person” under federal law 24 hours a day, whether or not you’re currently impaired. The stakes are enormous: this is a felony, not a misdemeanor, and a conviction strips your firearm rights permanently.
The Marijuana Trap
The collision between state marijuana legalization and federal firearms law catches millions of Americans who don’t realize they’re in it. Marijuana remains a Schedule I controlled substance under federal law. Every state that has legalized recreational or medical marijuana has done so only under state law. The federal prohibition has not budged.
When you buy a firearm from a licensed dealer, you fill out ATF Form 4473. Question 21(f) asks whether you are an “unlawful user of, or addicted to, marijuana or any depressant, stimulant, narcotic drug, or any other controlled substance.” The form warns: “The use or possession of marijuana remains unlawful under Federal law regardless of whether it has been legalized or decriminalized for medicinal or recreational purposes in the state where you reside.”5Bureau of Alcohol, Tobacco, Firearms and Explosives. Firearms Transaction Record – ATF Form 4473 Answering “no” while being a regular user is a separate federal crime: lying on the form.
A Shifting Legal Landscape
In January 2026, ATF revised its regulatory definition of “unlawful user” to require evidence of regular and recent use rather than isolated or sporadic consumption. Under the updated rule, a person who has stopped using a controlled substance, or whose use was truly occasional and in the past, is not considered an unlawful user.6Federal Register. Revising Definition of Unlawful User of or Addicted to Controlled Substance ATF noted that the revision was partly motivated by United States v. Hemani (No. 24-1234), in which the Supreme Court granted certiorari to review whether § 922(g)(3) is constitutional. The lower courts had struck the provision down as applied to the defendant. Until the Supreme Court rules, the federal prohibition remains enforceable, and regular marijuana users who own firearms face real criminal exposure.
Penalties You Could Face
At the state level, a first offense for carrying while intoxicated is typically charged as a misdemeanor. The severity varies. Some states cap misdemeanor jail time at 90 days, while others allow up to a year. Fines similarly span a wide range. Even a low-level conviction creates a criminal record with lasting consequences.
Aggravating circumstances push the charge higher. Repeat offenses, a BAC far above the legal limit, or carrying while intoxicated during the commission of another crime can elevate the charge to a felony in many states. Felony convictions carry multi-year prison terms and permanently strip your right to possess firearms under both state and federal law.
Federal charges under § 922(g)(3) are felonies from the outset, carrying up to 15 years in prison. If you have three or more prior convictions for violent felonies or serious drug offenses, a mandatory minimum of 15 years applies with no possibility of probation.4Office of the Law Revision Counsel. 18 USC 924 – Penalties
What Happens to Your Concealed Carry Permit
A conviction for carrying while intoxicated almost always triggers consequences for your concealed carry permit, even if the underlying criminal penalty is relatively mild. Most issuing authorities treat this as grounds for mandatory revocation or suspension. Getting the license back typically requires reapplication from scratch after a waiting period, and some states impose permanent bans depending on the offense.
An arrest alone can lead to administrative suspension in some jurisdictions while the case is pending. And because states share criminal history data through the National Instant Criminal Background Check System, a conviction in one state can derail your ability to obtain a permit in another.
Civil Liability When Something Goes Wrong
Criminal charges are only half the picture. If an intoxicated person discharges a firearm and injures someone, they face civil lawsuits for negligence. The intoxication itself is powerful evidence of breach of duty, because no reasonable person would handle a firearm while impaired. Damages can include medical costs, lost wages, pain and suffering, and in egregious cases, punitive damages.
Liability can also extend to someone who hands a gun to a person they know or should know is impaired. This theory, called negligent entrustment, holds the supplier responsible for foreseeable harm. Federal law defines negligent entrustment under the Protection of Lawful Commerce in Arms Act as supplying a firearm to someone the seller knows or reasonably should know will use it in a way that creates an unreasonable risk of physical injury.7Office of the Law Revision Counsel. 15 USC 7903 – Definitions That PLCAA definition applies specifically to sellers, but the broader tort principle reaches anyone who provides access to a dangerous instrument when they have reason to know the recipient is unfit. Handing your intoxicated friend a loaded gun at a party is the kind of decision that creates liability for whatever happens next.
Getting Your Firearm Rights Back After a Conviction
If you lose your firearm rights through a conviction, restoration depends almost entirely on where you live and how serious the offense was. State mechanisms typically fall into three categories: automatic restoration after a waiting period, expungement or record-sealing that removes the disqualifying conviction, and pardons. Waiting periods for misdemeanor convictions commonly range from three to ten years after completing the sentence, though some states have no automatic path at all and require a pardon or court petition.
Federal firearm rights lost through a felony conviction are much harder to restore. Federal law technically allows the ATF to grant relief from firearms disabilities, but Congress has not funded that program in decades, effectively closing the door. A presidential pardon or a state-level restoration that meets specific federal criteria may work, but these are exceptional outcomes, not standard procedure.
Restoration is expensive, slow, and uncertain. Building a case for it typically requires an attorney, a clean record for years after the conviction, and patience with a process that has no guaranteed timeline. Treating restoration as a backup plan, rather than keeping firearms and alcohol apart in the first place, is a strategy that rarely works out the way people hope.