we are armed logo
Sign Up
Sign Up
×
Stay informed with the latest firearm laws, safety tips, and news for responsible gun owners. Click Here

Maine Firearm Laws - Complete Guide

Comprehensive analysis of Maine gun laws, permit requirements, carry regulations, and recent legislative updates for responsible gun owners.

Maine

Maine Gun Laws at a Glance

Maine is a permitless (constitutional) carry state for handguns, in effect since October 15, 2015. Adults 21+ may carry concealed without a license. Maine retains a shall‑issue Concealed Handgun Permit (CHP) for reciprocity and certain location-based advantages. The state has strong firearm preemption, and self‑defense law recognizes Castle Doctrine in the home while maintaining a duty to retreat in public when complete safety is possible. In 2024–2025, Maine enacted notable changes, including background checks for advertised/private gun‑show sales, updates to the state’s “yellow flag”/ERPO process, and a 72‑hour waiting period law that is currently enjoined by a federal court.

  • Permitless Concealed Carry: Handguns carried concealed without a permit for eligible adults.
  • Optional CHP (Shall‑Issue): Useful for reciprocity and specific restricted locations.
  • Statewide Preemption: Localities generally cannot regulate firearms.
  • Castle Doctrine / Duty to Retreat: No duty to retreat in a dwelling; duty in public when safe.
  • Recent Reforms (2024–2025): Advertised/private gun‑show background checks; waiting period law passed but not in effect pending litigation; ERPO/yellow‑flag refinements.
  • Yellow Flag Law (ERPOs): Prevents gun ownership and new purchases by dangerous individuals; Maine requires medical diagnosis
Maine

Areas of Restriction

002-colegio

Federal Prohibited Locations

Schools, Federal buildings

003-deportes-con-balones

State-Specific Restrictions

Certain state parks/national parks require a permit, posted on‑premises liquor establishments, University/college campus policies.

001-seguridad-de-casa

Private Property Rights

Businesses may post to prohibit; owners/agents may ask you to leave; refusal can lead to trespass charges.

004-no-alcohol

Intoxication Prohibitions

No carry while under the influence

STAY ARMED WITH KNOWLEDGE — GET UPDATES FOR EVERY STATE THAT MATTERS TO YOU.

Our automated monitoring system tracks new legislation, court decisions, and regulatory changes across all 50 states, delivering updates directly to your inbox.

Sign Up Now

Concealed Carry

Constitutional Carry

Effective Oct. 15, 2015, Maine allows constitutional carry for individuals who:

  • Are 21+; or 18–20 if on active duty in the U.S. Armed Forces/National Guard or honorably discharged
  • Are not prohibited by state or federal law from possessing firearms
  • Comply with duty‑to‑inform when carrying without a permit upon official contact
  • Follow all location restrictions and private property rules

 

Permitless Carry Limitations

  • Age Restriction: 21+ (18–20 only with qualifying military status)
  • Prohibited Locations: Schools; courts; State House/Capitol area; posted bars/on‑premises liquor establishments; certain state/national parks without a permit; federal facilities
  • No Reciprocity: Permitless carry is not recognized by other states; a CHP is advisable for interstate travel
  • Enhanced Penalties: Failure to inform an officer when carrying without a permit during a stop is a civil offense (fine up to $100)

Advantages of Licensed Carry

  • Interstate Recognition: Valid in ~23 states via reciprocity/recognition agreements (counts change periodically)
  • Access to Certain Areas: State and national parks (including Acadia National Park) allow concealed carry with a permit
  • Streamlined Encounters: No duty‑to‑inform applies to permit holders
  • Proof of Training: Course documentation useful for travel and best practices

 

Application Requirements

  • Age: Generally 18+
  • Background Check: Issuing authority checks criminal, protection‑from‑abuse, drug, and mental health disqualifiers; good moral character review (primarily last 5 years)
  • Training Course: Demonstrate knowledge of handgun safety via an approved course taken within 5 years (LE, NRA/recognized private instructors, hunter ed acceptable) or personal demonstration if the authority allows; military basic firearms training may substitute
  • Proficiency Demonstration: Satisfy the issuing authority’s safety‑knowledge requirement (documentation or in‑person demonstration if offered)
  • Fee: Residents: $35 new / $20 renewal (valid 4 years). Nonresidents (or State Police issuing authority): $60 new/renewal

 

Disqualifying Factors

  • Felony conviction or disqualifying misdemeanor/domestic violence offense
  • Active protection from abuse order meeting statutory criteria
  • Drug abuse convictions or certain recent criminal conduct indicating lack of good moral character (typically past 5 years)
  • Prohibited person under state/federal law (e.g., 18 U.S.C. §922(g))
  • False statements on application or prior revocation for cause

Maine has a Yellow Flag law, which allows authorities to restrict a resident’s ability to own or purchase a gun. Maine’s law is unique because it requires a medical evaluation in addition to a law enforcement petition for an order to be considered. 

These are enforced through Extreme Risk Protection Orders (ERPOs). Emergency orders are one-sided and only last until a court hearing, when the person can present their case, and the judge decides if a final order is necessary. 

ERPOs are registered nationally in the NICS, and prevent any new purchases that require a background check.

  • Effective Date: 2020
  • Petitioners: Law enforcement only
  • Orders: Emergency custody until hearing (~14 days); extended up to 12 months (renewable)
  • Medical Evaluation: Required before court order
  • Firearm Surrender: Required per court order
  • Purchase Denial: Orders entered in NICS

Open Carry

Handgun Open Carry

Permitted statewide without a permit for those who may lawfully possess firearms (age and location limits apply). Private property, posted locations, and certain government sites may restrict or prohibit.

Carry Methods

  • Holstered handgun plainly visible
  • Vehicle carry: Loaded handgun may be carried in a vehicle by eligible adults; obey duty‑to‑inform if unpermitted
  • Parks/Capitol areas: Observe permit and posting requirements
  • Contact with Law Enforcement: Be prepared to safely disclose status and follow instructions

 

Long Gun Open Carry

General Provisions

  • Open carry of long guns is generally lawful
  • Loaded long guns in vehicles are prohibited (limited exceptions for certain hunting/target scenarios); transport unloaded with any magazine not inserted
  • Hunting/Target exceptions exist (e.g., resting a loaded firearm on a stationary vehicle when not in the passenger compartment under specific conditions)
  • Obey local discharge ordinances and all posted property rules

Federal Requirements Applied in Maine

  • Licensed Dealer Sales: NICS background check required for all retail purchases
  • Private Sales: Maine requires checks for advertised private sales and private sales at gun shows,
  • Non‑advertised transfers: Face‑to‑face deals remain generally outside the state mandate (federal prohibitions still apply)
  • Out-of-State Purchases: Must comply with federal and destination‑state law
  • Prohibited Persons: Maine mirrors federal categories and separately criminalizes transfer to a prohibited person

 

Age Requirements

  • Handguns: 21+ from Dealers; under Maine law it is unlawful to transfer a handgun to a minor (<18) (limited exceptions)
  • Long Guns: 18+ from Dealers; unlawful to sell/transfer a firearm other than a handgun to persons under 16, and to sell to those 16–17 (with limited parental/guardian exceptions)
  • Ammunition: Federal law: 21+ for handgun ammo from dealers; 18+ for rifle/shotgun ammo

Maine-Specific Purchase Laws

Waiting Periods

  • State Waiting Period: 72‑hour waiting period enacted Aug. 9, 2024, but currently blocked by court injunction (not in effect while litigation proceeds)
  • Other relevant info: Maine strengthened mental‑health and ERPO/yellow‑flag procedures in 2024; background checks expanded to advertised/private gun‑show sales
  • Other relevant info: No statewide firearm registration

 

Purchase Limitations

  • Purchase Limits: None statewide
  • Registration: None
  • Permit to Purchase: None

Prohibited Locations

prohicion armas

Absolutely Prohibited Locations

  • K–12 Schools / School Buses / School Events: Possession prohibited with narrow exceptions
  • Courts & Courthouses: Firearms prohibited
  • State House/Capitol Area: Prohibited by statute and rule
  • Acadia National Park: Permit required to carry; federal regulations apply to facilities
  • Posted On‑Premises Liquor Establishments: If posted, no carry; regardless of posting, no carry while under the influence

 

Government Buildings

  • State Capitol/Capitol Park/State House Garage & Tunnel: Prohibited
  • Correctional Facilities: Prohibited
  • Publicly posted state parks and certain state facilities: Permit may be required or possession prohibited by rule
  • Courts and some municipal buildings: Prohibited

Business Prohibition Authority

  • Signage may prohibit carry on private premises
  • Owner/agent verbal notice controls; refusal to leave can create trespass liability
  • Hotels/Campgrounds may prohibit by policy/posted notice
  • Employers may restrict carry inside workplaces; see vehicle parking protections 

General Storage Requirements

No statewide mandatory safe‑storage statute

as of 2025; safe storage strongly encouraged and may be considered in negligence/child‑endangerment contexts.

Child Access Prevention

  • Avoid access by minors; criminal liability can arise under endangerment/transfer statutes
  • Use locking devices/safes; maintain separate storage for firearms and ammunition when practicable
  • Follow manufacturer guidance for secure storage
  • Transport precautions when minors are present

Vehicle Storage

General Provisions

  • Employees’ Vehicles at Work: Employers may not prohibit an employee with a CHP from keeping a firearm locked and out of sight in the employee’s vehicle on work premises
  • Unattended Vehicles: Use a locked container or trunk; keep firearm out of plain view
  • Long Guns: Do not leave loaded long guns in vehicles; unlawful in most circumstances
  • Compliance: Always follow posted property and specific site rules

Transportation Rules

arma de fuego en vehiculo

Licensed/Constitutional Carry Holders

  • Handguns: Eligible adults may carry loaded in vehicles; maintain control and comply with duty‑to‑inform if carrying without a permit
  • Parks/Acadia: Permit may be required to carry concealed within state/national parks and related facilities
  • Alcohol: Do not carry while impaired; additional penalties if OUI while in possession of a loaded firearm
  • Posting/Notice: Respect posted prohibitions and promptly leave if requested

 

Unlicensed Individuals

  • Handguns: If not eligible for constitutional carry, transport unloaded, cased, and inaccessible
  • Long Guns: Unloaded in vehicles; any magazine not inserted; follow hunting exceptions only where expressly allowed
  • Stops/Contact: If transporting lawfully but not permitless‑eligible, do not conceal on your person
  • Employees at Worksites: Without a CHP, do not rely on the parking‑lot protection

Federal Safe Passage (FOPA)

  • Lawful Origin and Destination: Legal possession at both locations
  • Unloaded and Secured: Ammunition separated from firearm
  • Inaccessible Storage: Locked container or vehicle trunk
  • Continuous Journey: Minimal stops for necessities only

Self-Defense Laws

Castle Doctrine

Home Protection

  • No duty to retreat: in one’s home
  • Deadly force: justified against unlawful intruders in enumerated circumstances
  • Protection of occupants: against arson/violent felonies within the dwelling
  • Standard: Reasonable belief governs use of force

 

Vehicle and Workplace

  • Workplace/Premises: Non‑deadly force to terminate criminal trespass; deadly force in limited arson scenarios
  • Vehicles: Castle‑like protections do not broadly extend; apply standard self‑defense rules
  • Demand to desist: Required in some premises‑defense scenarios unless unsafe
  • Provocation/aggressor: rules limit justification

Duty to Retreat (No Stand Your Ground)

Public Places

  • Duty to retreat: Only if one knows they can do so with complete safety
  • Deadly force justified: to prevent death, serious bodily injury, kidnapping, robbery, or sexual assault
  • Initial aggressor: loses justification unless withdrawal is communicated and honored
  • Defense of others: permitted under same standards

 

Legal Protections

  • Justification negates criminal liability when elements are met
  • Civil immunity not broadly codified; exposure depends on facts
  • Post‑incident reporting/cooperation advised; consult counsel promptly

Knife and Blade Laws

kampveyaban
kampveyaban

Maximum Legal Blade Length

  • State Maximum: No statewide maximum blade length
  • Local Preemption: No knife‑law preemption; check local ordinances

 

Categories of Knives

Maine is relatively knife‑friendly, with the state’s former switchblade ban repealed in 2015; however, concealed carry of certain knives remains restricted.

 

Prohibited and Federally Regulated Knives

  • Switchblades: Legal under state law since 2015 (former ban repealed)
  • Ballistic Knives: Legal to own and carry since 2015
  • Federal Interstate Ban: No Specific State Ban

 

State-Specific Legal Knives

  • Gravity Knives: Generally legal; classification as “dangerous weapon” may affect concealed carry
  • Butterfly/Balisong Knives: Generally legal; treat as folding knives unless concealed as a “dangerous weapon”
  • Assisted-Opening Knives: Legal; treated as ordinary folders
  • Concealed/Disguised Knives: Concealed carry of deadly weapons are unlawful; no permit authorizes concealed knives

 

Generally Legal Knives

  • Pocket/Folding Knives: No statewide blade limits; avoid concealed carry of knives deemed “dangerous weapons”
  • Fixed/Utility Knives: No statewide blade limits; exercise caution regarding concealment

Carry Restrictions

  • Concealed Carry: Restricted, do not conceal knives likely considered “dangerous weapons”
  • Open Carry: Generally lawful
  • Restricted Locations: Schools, courts, posted government buildings, and federal facilities mirror firearm restrictions

 

Local Ordinance Preemption

  • Preemption Status: No statewide preemption for knives—verify local rules

 

Significant Differences from Gun Laws

  • Permits: CHP does not authorize concealed knives
  • Transport/Storage: Fewer statutory specifics than firearms; rely on general criminal/weapon statutes
  • Age Restrictions: No detailed statewide scheme specific to knives; default criminal statutes apply

Recent Updates

New Laws