Minnesota AR-15 laws allow civilian ownership, but the state classifies the rifle as a “semiautomatic military-style assault weapon” under Minnesota Statutes Section 624.712. That designation is not a ban. What it does is trigger a permit requirement before purchase, a background-check requirement on private sales, and stiffer penalties than you would face with a bolt-action rifle if something goes wrong.
Minnesota statute specifically names the “Colt AR-15 semiautomatic rifle type” on its list of covered firearms, and the Bureau of Criminal Apprehension publishes the full list so buyers, dealers, and police can identify what falls under it. Copies, duplicates, renamed versions, and firearms manufactured under licensing agreements with the original makers all qualify, no matter who built them or where.
Who Can Legally Own One
You must be at least 18 to buy an AR-15 in Minnesota, whether the seller is a licensed dealer or a private party. Federal law sets the same minimum for long-gun purchases from dealers. A minor under 18 may possess a semiautomatic military-style assault weapon only in the direct presence or under the supervision of a parent or guardian.
Minnesota Statutes Section 624.713 lists the people who cannot possess firearms at all. That includes anyone convicted of a “crime of violence” (a defined term covering offenses like assault, robbery, and burglary), anyone convicted of a drug crime, anyone subject to a domestic abuse restraining order, anyone adjudicated as mentally ill or committed to a treatment facility, and anyone convicted of a domestic violence misdemeanor. Certain juvenile adjudications also disqualify a person.
The penalties are tiered. A person in the first prohibited category who possesses an AR-15 specifically faces up to five years in prison, a fine of up to $10,000, or both. A person in the second category who possesses any firearm faces up to 15 years in prison, a fine of up to $30,000, or both. The remaining prohibited categories carry gross misdemeanor charges.
The Permit You Need to Buy
Because the AR-15 sits on the semiautomatic military-style assault weapon list, you cannot buy one without first holding a transferee permit, commonly called a permit to purchase. You apply in writing to the chief of police in your city, or to the county sheriff if your city has no police department. The application asks for your name, address, driver’s license number, physical description, and a signed statement that you are not prohibited from possessing firearms. There is no fee for the application, the investigation, or the permit itself.
Law enforcement runs your information through the Minnesota Crime Information System, the national criminal records repository, and the National Instant Criminal Background Check System. The agency has up to 30 days to issue the permit or provide a written denial. Once issued, the permit is valid for one year.
Using a Carry Permit Instead
A Minnesota permit to carry satisfies the same background-check function and lets you skip the separate permit to purchase. A carry permit costs roughly $80 for a new application and $60 for a renewal at most sheriff’s offices, is valid for five years, and requires a certified training course. If you plan to buy more than one firearm over the coming years, the carry permit is often the more practical option.
Private Sales After the 2023 Universal Background Check Law
Minnesota enacted universal background checks for private-party transfers of pistols and semiautomatic military-style assault weapons in May 2023. If you sell, gift, or lend an AR-15 to anyone who is not an immediate family member, that person must hold a valid permit to purchase or permit to carry. Both parties then complete a Private Party Transfer Form and keep their copies for ten years.
Immediate family transfers are exempt from the background-check step, though a written record is still worth keeping. If the firearm later turns up in an investigation, having documentation of when it left your hands protects you.
Transporting Your Rifle
Minnesota Statutes Section 97B.045 governs how any firearm moves in a vehicle, and the rules apply year-round. Your AR-15 must be unloaded and enclosed in a gun case designed for a firearm. The case must be fully closed by a zipper, snap, buckle, or similar fastener, with no part of the rifle exposed. As an alternative, you can carry it unloaded in a closed trunk.
The statute contains a narrow exception for handguns carried under a valid permit to carry. Because the AR-15 is a rifle, that exception does not help. Even a carry permit holder must transport the rifle cased and unloaded. A violation is charged as a game-and-fish offense, but the larger risk is that an uncased rifle in a vehicle gives officers grounds to investigate further.
Where You Cannot Bring It
State law prohibits firearms in correctional facilities, state hospitals, and courthouse complexes. Carrying a firearm on K-12 school property is a felony under Section 609.66 unless the school’s principal has given written permission. Licensed child care centers follow the same rule. Federal buildings, including post offices and federal courthouses, are off-limits under federal law.
Private employers and colleges can prohibit firearms on their premises. A workplace policy violation is not a criminal offense on its own, but Minnesota law provides no employment protection for someone fired over it. Businesses that post notice or personally tell you firearms are not allowed can pursue a trespass charge if you ignore the notice.
Accessories and Modifications
Trigger Activators
A 2024 omnibus public safety bill added “trigger activators” to Minnesota’s prohibited weapons list, making possession a felony. The category was written to cover devices like bump stocks and forced reset triggers that raise a rifle’s rate of fire. A Ramsey County District Court judge struck down the portion of the law that specifically banned binary triggers, ruling it violated the Minnesota Constitution’s single-subject requirement. Only the binary trigger provision was invalidated. The broader trigger activator ban remains in force, and the Walz administration has announced plans to appeal. In practical terms, possessing a bump stock or forced reset trigger in Minnesota today carries real criminal risk while the courts sort out the edges.
Homemade and Unserialized Firearms
Minnesota Statutes Section 609.667 makes it a felony to possess a firearm without a serial number, and the law has been on the books since 1994. It reaches homemade firearms, 3D-printed receivers, and any so-called ghost gun that was never serialized. The penalty is up to five years in prison, a fine of up to $10,000, or both. If you build an AR-15 from an 80-percent lower, the completed rifle must carry a proper serial number before you possess it in the state.
Magazine Capacity
As of early 2026, Minnesota has no enacted magazine capacity limit. A pending bill would ban magazines holding more than ten rounds, with a proposed effective date of July 1, 2026, and a compliance deadline of July 1, 2027, for current owners. Standard AR-15 magazines hold 30 rounds, so enactment would affect most owners. Whether the bill will pass this session is uncertain.
Handling and Discharge
Section 609.66 separates careless handling from reckless discharge, and the gap between the two is large. Recklessly handling a firearm in a way that endangers another person is a misdemeanor punishable by up to 90 days in jail, a fine of up to $1,000, or both. That covers sweeping a loaded rifle across a room or leaving one where someone could easily pick it up.
Recklessly discharging a firearm within a municipality is a felony under a separate subdivision of the same statute. The distinction matters for AR-15 owners because the rifle’s range and power make discharge in populated areas especially dangerous, and prosecutors charge accordingly.
Mandatory Minimums When a Firearm Is Used in a Crime
If an AR-15 is used during certain serious offenses, Minnesota Statutes Section 609.11 imposes a mandatory minimum prison sentence of three years. Qualifying crimes include murder, first- through third-degree assault, aggravated robbery, kidnapping, burglary, criminal sexual conduct, and carjacking, among others. A second or subsequent firearm offense during one of these crimes carries a five-year mandatory minimum. A prohibited person convicted of illegal firearm possession under Section 624.713 also faces a five-year mandatory minimum.
A judge can depart from these minimums only on a prosecutor’s motion or the court’s own motion, and only after finding “substantial and compelling reasons” on the record. Departures are not routine. The legislature built the minimums precisely so that using a firearm during a violent crime produces prison time regardless of mitigation.
Self-Defense and the Duty to Retreat
Minnesota is not a stand-your-ground state. In public, if you can safely retreat from a threat, the law expects you to do so before using deadly force. A 2023 bill that would have eliminated the duty to retreat failed in the House, so the requirement remains in place.
Inside your home, the analysis shifts. Minnesota’s Castle Doctrine allows deadly force to prevent a felony inside your dwelling without a duty to retreat, provided the force is reasonable under the circumstances. Shooting someone for trespassing on the lawn or grabbing a package from the porch would not qualify. The felony must be occurring inside the home, and your response must be proportional to the danger.
Owning an AR-15 for home defense is lawful. Even so, legal exposure after a shooting is significant, and prosecutors will examine whether your belief that deadly force was necessary was reasonable and whether the response was proportionate. Over-penetration from rifle rounds in a residential setting is a separate practical concern.
Reporting a Lost or Stolen AR-15
You must report a lost or stolen firearm to law enforcement within 48 hours of the time you knew or should have known about it. A first violation is a petty misdemeanor, a second is a misdemeanor, and additional violations escalate to gross misdemeanors. Owners who report promptly receive immunity from criminal firearm storage charges, which is a strong reason to call it in right away rather than wait.
Pending Legislation to Watch
Minnesota’s extreme risk protection order law took effect on January 1, 2024, and is no longer a proposal. Family members, household members, law enforcement officers, mental health professionals, and certain attorneys can petition a court for an order requiring a person found to pose a significant danger to surrender all firearms for up to one year. The law includes emergency-order provisions when the risk is immediate.
Beyond the red flag statute, three proposals sit in front of the legislature as of early 2026. SF 4290 would expand the definition of semiautomatic military-style assault weapon from a named-model list to feature-based criteria, sweeping in any semiautomatic rifle with a detachable magazine and one or more military-style features such as a pistol grip, thumbhole stock, or threaded barrel. The bill would also create a mandatory certification process for current owners that would work as a registration requirement. A separate bill would cap magazine capacity at ten rounds with the effective and compliance dates noted above, exempting .22 caliber tube-fed and lever-action tubular magazines. Draft safe-storage legislation in both chambers would require firearms to be stored unloaded with a locking device, or in a locked container or gun room, whenever a child under 18 could gain access, with penalties ranging from a misdemeanor up to a felony carrying five years if an unsecured firearm causes serious injury or death. None of these three bills has passed as of early 2026, but the safe-storage push has strong legislative support and could move quickly.