Maine Gun Laws (2026): Constitutional Carry, 72-Hour Wait & Red Flag Law

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Last updated May 2026 · By Nick Hall, CCW instructor tracking Maine’s unusual mix of constitutional carry and recent restrictive changes including the 72-hour waiting period, yellow flag law, and Question 2 red flag law effective February 2026

Disclaimer: This is an editorial round-up of Maine gun laws. We do our best to make sure it’s correct, but do not rely on this as legal advice. If you’re unsure about anything, consult a lawyer.

Looking for a brick-and-mortar shop in Maine? See our best gun stores in Maine guide for verified FFL dealers, ranges, and gunsmiths near you.

Intro

TL;DR: Maine gun laws in 2026 are a complicated mix of permissive and restrictive rules. Maine is a constitutional carry state since 2015 (LD 652) with a 72-hour waiting period on all firearm sales (2024), background checks on advertised private sales and gun-show transfers, a unique yellow flag law requiring mental health evaluation, and a new red flag law effective February 21, 2026 (Question 2, voter-approved 2025). No magazine limits, no assault weapons ban. Stand Your Ground codified at Me. Rev. Stat. tit. 17-A § 108.

Maine is a genuinely mixed gun-law state and one of the more complicated jurisdictions to summarize. On one hand, it’s a constitutional carry state with no magazine cap and no assault weapons ban. On the other hand, voters approved a red flag law in November 2025, the legislature added a 72-hour waiting period and expanded background checks in 2024, and Maine already had a unique “yellow flag” mental-health-evaluation law.

The October 2023 Lewiston mass shooting catalyzed most of the recent changes to Maine gun laws. The 131st Legislature in 2024 passed the 72-hour waiting period, background checks on advertised and gun-show private sales, and created a state Office of Violence Prevention. Then in November 2025 voters approved Question 2, adding a conventional red flag law (Extreme Risk Protection Order) that operates alongside the existing yellow flag law. It takes effect February 21, 2026.

If you’re a Maine gun owner, moving here, or passing through, this page covers the 2026 rules with statute citations and official sources.

Maine Gun Laws: The Highlights

TL;DR: Maine gun laws allow constitutional carry at 21+, 72-hour waiting period, background checks on advertised private sales, no magazine or AWB restrictions, yellow flag + red flag laws, Stand Your Ground, partial preemption.

• Constitutional Carry State since October 15, 2015 under LD 652 (Public Law 2015, Ch. 327). Permitless concealed carry at 21+.
• Optional Concealed Handgun Permit (CHP) via local municipal police or Maine State Police. Useful for reciprocity and NICS bypass. 18-20 year olds can obtain a CHP.
• 72-hour waiting period on all firearm purchases (2024 law, upheld by federal appeals court in 2026).
• Background checks required on advertised private sales and gun-show transfers (2024 law).
• Yellow Flag law (Me. Rev. Stat. tit. 34-B § 3862-A) — unique to Maine, requires mental health evaluation before firearms can be restricted.
• Red Flag law via voter-approved Question 2 (2025), effective February 21, 2026. Operates alongside yellow flag; allows family members to petition courts directly.
• No state magazine capacity limit, no assault weapons ban, no firearm registration.
• Stand Your Ground under Me. Rev. Stat. tit. 17-A § 108. No statutory duty to retreat in dwelling or where legally present.

For the official state resource, see the Maine State Police firearms licenses page.

Key Information at a Glance

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Constitutional Carry: How LD 652 Changed Maine

TL;DR: Maine became a constitutional carry state on October 15, 2015 under LD 652. Any person 21 or older who can legally possess a firearm may carry concealed without a permit. The optional CHP remains available for reciprocity and NICS bypass.

Maine gun laws shifted in 2015 when the legislature passed permitless carry through LD 652 (Public Law 2015, Chapter 327), signed by then-Governor Paul LePage. It went into effect October 15, 2015, making Maine the 7th state at the time to adopt constitutional carry.

The statute sets the minimum age at 21 for permitless carry. That matches the federal handgun-purchase age at FFL dealers under 18 U.S.C. § 922(b)(1), so there’s no meaningful age gap. 18-20 year olds can still carry concealed in Maine, but they need to obtain the optional CHP through local police.

Who Can Carry a Gun in Maine?

TL;DR: 18+ for open carry and long guns, 21+ for permitless concealed carry. 18-20 year olds can get a CHP. Must not be federally prohibited under 18 U.S.C. § 922(g).

Maine’s age rules: 18+ for open carry of any legal firearm, 21+ for permitless concealed carry, 18-20 year olds can obtain a Concealed Handgun Permit through their local police department or the Maine State Police.

Federal prohibited-person rules apply regardless. If you’re barred under 18 U.S.C. § 922(g), Maine constitutional carry doesn’t help you.

Purchasing a Firearm in Maine

TL;DR: Maine gun laws impose a 72-hour waiting period, federal NICS at dealers administered by the ATF, and background checks on advertised private sales and gun-show transfers. No state purchase permit, no firearm registration.

Here’s the step-by-step for a first-time Maine buyer:

• Choose a licensed dealer or private seller. For advertised/gun-show private transfers, the sale must go through an FFL. Casual private sales between two Maine residents who aren’t advertising remain unregulated.
• Complete ATF Form 4473 + state paperwork. Required at FFL dealers.
• Pass the NICS background check. Federal requirement. Maine is a NICS state.
• Wait the 72-hour period. 2024 law requires a 72-hour delay between background check initiation and firearm delivery. Federal appeals court upheld the requirement in 2026.
• Take delivery. After the waiting period, you can pick up the firearm.
• Optional: Apply for CHP. Useful for reciprocity and NICS bypass at dealers under 18 U.S.C. § 922(t)(3).

The advertised-sale background check requirement is unique. If you list a firearm for sale on Armslist, GunBroker, Craigslist, or similar platforms, or transfer at a gun show, the sale must go through an FFL. Giving a gun to a family member or a non-advertised private sale does not trigger the requirement.

Maine Concealed Handgun Permit (CHP)

TL;DR: Shall-issue concealed handgun permit through local police or Maine State Police. Requires handgun training, application fee, and background check. Valid 4 years. Useful for reciprocity and the 18-20 year old age bracket.

Maine’s CHP is issued by the local police department in your municipality, or by the Maine State Police if your town doesn’t have a local police department. Application requirements include a state-approved handgun training course, fingerprints, and a background check.

Fees vary by issuing agency but typically run $35-$75 for the initial permit. The CHP is valid for 4 years and can be renewed. The permit is particularly useful for 18-20 year olds (who can’t carry concealed under constitutional carry) and for out-of-state reciprocity.

Yellow Flag Law vs. Red Flag Law (Both Active)

TL;DR: Maine is the only state with both a yellow flag and a red flag law. Yellow flag (Me. Rev. Stat. tit. 34-B § 3862-A) requires mental health evaluation and can only be initiated by law enforcement. Red flag (Question 2, effective Feb 21, 2026) allows direct court petition by family members and works more like standard ERPO laws in other states.

Maine’s yellow flag law is a moderate compromise that Maine enacted after pressure for a red flag law but concerns about due process. It requires:

• Law enforcement initiation (not family members).
• The subject taken into protective custody.
• Mental health evaluation by a medical professional.
• Court order based on the medical evaluation before firearms are restricted.

The 2025 voter-approved Question 2 added a conventional red flag law that operates alongside yellow flag. Effective February 21, 2026, the red flag law allows:

• Family members, household members, and law enforcement to petition directly.
• No protective custody requirement.
• No mental health evaluation required for the initial order.
• Temporary (ex parte) order for 14 days, extendable after hearing to a longer period.

The two laws operate in parallel. A petitioner can choose either route, and law enforcement may prefer yellow flag for cases where the subject appears to need mental health intervention rather than just firearm removal.

State Preemption and Local Rules

TL;DR: Partial state preemption under 25 MRSA § 2011. Municipalities cannot regulate possession or carry, but retain some authority over firearm discharge and use on publicly owned property.

Maine’s preemption statute at 25 MRSA § 2011 reserves regulation of firearm possession and carry to the state. Portland, Augusta, Bangor, and other municipalities cannot pass their own concealed carry permitting schemes or magazine limits. But localities retain authority to regulate discharge of firearms within city limits for safety purposes and to restrict carry in specific publicly owned buildings they control (city halls, parks with posted signage, etc.).

Federal Law Still Sets the Ceiling

TL;DR: Maine’s permissive carry laws operate inside federal constraints. NFA rules, federal prohibited-person lists, and gun-free federal buildings apply regardless of state law.

Maine cannot override federal firearm law. Federally prohibited people cannot possess firearms. Federal buildings (post offices, courthouses, military installations) remain gun-free zones under 18 U.S.C. § 930. NFA items require ATF approval.

Reciprocity: Out-of-State Permits

TL;DR: Maine recognizes valid concealed carry permits from every other state. The Maine CHP is recognized in approximately 35 states.

Maine honors any valid concealed carry permit or license from any other state under 25 MRSA § 2003(15). Even if your home state has lower requirements than Maine, your permit is honored.

Outgoing reciprocity covers most shall-issue and permissive states. Non-residents can apply for a Maine CHP for use when traveling in states that don’t recognize their home-state permit.

Maine Gun Laws for Out-of-State Visitors

Maine honors valid concealed carry permits from other states for visitors 21 or older. Visitors without a permit can also carry concealed under Maine’s constitutional carry framework if they meet the 21+ age requirement and can legally possess a firearm under federal law. Maine’s 72-hour waiting period applies to firearm purchases in Maine, not to bringing in lawfully owned firearms from out of state.

States That Recognize the Maine CHP

Full Reciprocity (~35)	NOT Recognized In
Alabama, Alaska, Arizona, Arkansas, Colorado, Delaware, Florida, Georgia, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Mexico, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming	California, Connecticut, Hawaii, Illinois, Maryland, Massachusetts, Minnesota, New Jersey, New York, Oregon, Rhode Island, Washington, Washington D.C.

Reciprocity is subject to change. Verify through the Maine State Police before traveling.

Where You Can’t Carry

TL;DR: Schools, courthouses, State House, federal buildings, and posted private property. Full list in 25 MRSA and Title 17-A provisions.

Under Maine law, firearms are prohibited in:

• K-12 schools, school buses, and school grounds (with narrow exceptions for unloaded firearms in locked vehicles in parking areas in some cases)
• College and university campuses (institutional policies vary)
• Courthouses and court buildings
• Maine State House and associated capitol buildings
• Federal buildings under 18 U.S.C. § 930
• Correctional facilities
• Posted private property where the owner has communicated a no-firearms policy

Carrying under the influence of alcohol or drugs is prohibited independently and can trigger criminal charges.

Maine Self-Defense Laws: Stand Your Ground and Castle Doctrine

TL;DR: Stand Your Ground codified in Me. Rev. Stat. tit. 17-A § 108. No duty to retreat in your dwelling or anywhere you have a legal right to be. Castle Doctrine under 17-A § 104.

17-A MRSA § 108 Maine Physical Force in Defense of a Person

A person is justified in using deadly force upon another person when the person reasonably believes it necessary and reasonably believes such other person is: (1) About to use unlawful, deadly force against the person or a 3rd person; or (2) Committing or about to commit a kidnapping, robbery or [sexual assault] against the person or a 3rd person...The person or a 3rd person is not required to retreat if the person or the 3rd person is in the person's dwelling place and was not the initial aggressor. Outside the dwelling, deadly force is not justified if the person knows that the person or a 3rd person can, with complete safety, retreat from the encounter.

Maine’s self-defense law at Me. Rev. Stat. tit. 17-A § 108 permits the use of reasonable force to defend yourself against imminent unlawful force. Deadly force is justified when the person reasonably believes it’s necessary to defend against imminent death, serious bodily injury, kidnapping, or a sexual offense.

Maine’s Castle Doctrine provision at 17-A § 104 removes the duty to retreat from your dwelling. The state has interpreted “no duty to retreat” broadly through case law, covering anywhere you have a legal right to be. You cannot be the initial aggressor, must have a reasonable belief that force was necessary, and cannot be engaged in illegal activity.

Magazine Capacity and Assault Weapons

TL;DR: No state magazine capacity limit. No assault weapons ban. No feature-test restrictions.

Maine imposes no state-level restrictions on magazine capacity or “assault weapon” features. Standard-capacity AR-15 magazines, Glock magazines, and modern sporting rifles are all legal for possession and use. Maine has never passed an assault weapons ban, and proposed state-level bans have been consistently rejected.

NFA Items: Suppressors, SBRs, and Machine Guns

TL;DR: NFA items (suppressors, SBRs, SBSs, pre-1986 machine guns) are legal in Maine with proper federal ATF approval. No additional state-level restrictions.

Maine does not add state-level restrictions to federal NFA items. Suppressors are legal for ownership and hunting. SBRs, SBSs, and lawfully registered pre-1986 civilian machine guns are all legal with the federal ATF Form 4 process and $200 tax stamp.

Recent Changes (2024-2026)

TL;DR: 2024 legislation added a 72-hour waiting period, background checks on advertised/gun-show private sales, and created the Office of Violence Prevention. 2025 voter-approved Question 2 added a conventional red flag law effective February 21, 2026.

Maine’s firearms law changed significantly after the October 2023 Lewiston mass shooting. The major 2024-2026 developments:

• LD 2086 / LD 2224 (2024): 72-hour waiting period on all firearm sales. Upheld as constitutional by federal appeals court in 2026.
• LD 2086 (2024): Background checks required on advertised private sales and gun-show transfers.
• LD 2238 (2024): Created the Maine Office of Violence Prevention within state government.
• Question 2 (November 2025): Voter-approved red flag law (ERPO) effective February 21, 2026. Operates alongside the existing yellow flag law.

Additional firearms legislation is pending in the 2026 session. For current status, see the Maine Legislature bill tracker.

Our Take

TL;DR: Maine is a genuinely mixed state. Constitutional carry, no magazine or AWB restrictions, strong self-defense law, no registration — all positives. But the 72-hour waiting period, expanded background checks, and dual yellow/red flag system make it less permissive than its constitutional carry label suggests.

Maine’s 2024-2026 legislative and ballot-initiative changes reflect a state grappling with a high-profile mass shooting while maintaining much of its pro-gun culture. The result is an unusual regulatory landscape: you can carry concealed without a permit, buy an AR-15 with a standard 30-round magazine, and own suppressors, but you’ll wait 72 hours for a new firearm and can face a family-member-initiated red flag petition.

Practical takeaways for a Maine gun owner:

• Plan firearm purchases around the 72-hour waiting period. No more same-day acquisitions.
• Get a CHP if you’re 18-20 or travel frequently. It solves the age gap and reciprocity issues.
• Understand the red flag / yellow flag distinction. Family disputes can trigger a red flag petition starting February 21, 2026.
• For advertised private sales or gun-show transfers, route through an FFL — the 2024 background check requirement has teeth.

Bookmark the Maine State Police firearms page and Maine Revised Statutes for current law.

Maine-Specific Carry Questions

When did Maine adopt permitless carry, and is the Concealed Handgun Permit still useful?

Maine enacted permitless concealed carry in 2015 under LD 652. The Concealed Handgun Permit continues to be issued by the Maine State Police and municipal authorities for residents who want the reciprocity benefit, as the permit is honored by more states than the permitless-carry framework alone. The permit also streamlines certain point-of-sale interactions.

Does Maine Castle Doctrine apply outside the home?

Maine recognizes Castle Doctrine inside the home with a presumption favoring the defender. Outside the home, Maine retains a duty to retreat under common-law self-defense principles unless retreat would not be reasonably safe. The defender must articulate a reasonable belief that defensive force was necessary to prevent imminent harm. Maine has not enacted a statutory Stand Your Ground extension to public spaces.

Did Maine adopt a Red Flag law after the 2023 Lewiston incident?

Maine enacted significant firearm reforms in 2024 following the Lewiston incident, including expanded background checks and modifications to the state’s existing yellow-flag protective-custody framework. The yellow-flag statute differs from typical Red Flag laws in that it requires a mental-health evaluation before firearm restrictions take effect. The 2024 reforms expanded the categories of petitioners and the conditions triggering yellow-flag proceedings.

Can I carry on Maine state-managed land or in Acadia National Park?

Yes, under state law for state-managed land. Federal land within Maine — including Acadia National Park — follows federal rules, which permit lawful concealed carry on most federal park land but restrict carry inside federal buildings, visitor centers, and ranger stations. The state Concealed Handgun Permit does not change the federal-building restriction.

Frequently Asked Questions