Compliance Guides
Step-by-step guides to help you navigate Massachusetts firearms compliance.
Purchase Compliance
4Buying a Handgun in Massachusetts: Step-by-Step Compliance Guide
A comprehensive guide to legally purchasing a handgun in Massachusetts, including the approved firearms roster, the electronic FA-10 registration process, private sale requirements, and common compliance pitfalls. Updated for Chapter 135.
Frame Transfers: How to Buy Off-Roster Handguns in Massachusetts
Massachusetts restricts dealer handgun sales through a three-layer system: the EOPSS Approved Firearms Roster, the AG's 940 CMR 16.00 consumer protection regulations, and AG enforcement notices. Frame transfers allow LTC holders to legally obtain handguns that are blocked at the dealer level by purchasing a serialized frame and parts separately, then assembling and registering the completed firearm.
Massachusetts Ammunition Laws: Purchase, Storage, and Transport
Massachusetts requires a firearms license to buy or possess ammunition. This guide covers who can purchase, what types are legal, reloading components, out-of-state purchases, online sales restrictions, and storage rules.
Private Firearms Sales in Massachusetts: Complete Legal Guide
Massachusetts law allows licensed individuals to sell firearms privately, but strict rules apply. This guide covers the 4-transfer annual limit, eFA-10 filing requirements, Chapter 135 changes, and what both buyers and sellers must know.
Storage Requirements
1Transportation
2Transporting Firearms in Massachusetts: Legal Requirements
Massachusetts has specific requirements for transporting firearms in vehicles. This guide covers the current rules for LTC holders and FID holders and the federal safe-passage provision for qualifying interstate travel.
Vehicle Carry in Massachusetts: Passengers, Storage, and Rideshare
Massachusetts permits LTC holders to carry loaded handguns in vehicles under MGL c. 140, Section 131C if the firearm is under direct control. No law prohibits carrying because a non-LTC passenger is present. Chapter 135 expanded vehicle carry rules to FID holders and clarified locked container definitions.
Reciprocity
1Serialization & Registration
3eFA-10 Registration Guide: When and How to File in Massachusetts
Massachusetts uses the MIRCS Unified Gun Portal for firearm registration and transaction reporting. Deadlines and required participants vary by acquisition, transfer, import, inheritance, manufacture, loss, or theft.
Massachusetts Firearms Registration Deadline: What to Do Before October 28, 2026
Massachusetts Section 121B requires firearm registration through the electronic system and sets event-based deadlines. Guidance Letter #4 identifies an October 28, 2026 transition date for existing records, but that date is administrative guidance rather than the statute's universal deadline.
Untraceable Firearms (Ghost Guns) in Massachusetts: What the Law Says
Massachusetts separately regulates untraceable firearms, unfinished frames and receivers, privately made firearms, and certain use or sale of 3D printers and CNC machines. Section 121D does not create a general equipment registry.
Self-Defense
2Home Defense by Unlicensed Residents in Massachusetts
The Castle Doctrine protects the act of defending your home but not the unlicensed possession of the weapon used. A non-LTC resident who uses a firearm in home defense may face misdemeanor possession charges under Section 10(h) even if the self-defense claim succeeds. Chapter 135 did not create a home defense exception.
Self-Defense Law in Massachusetts: Duty to Retreat and Castle Doctrine
Massachusetts requires retreat before force in all public locations. The Castle Doctrine (MGL c. 278, Section 8A) eliminates the duty to retreat only inside the dwelling against an unlawful intruder. The burden of proof falls on the Commonwealth to disprove a self-defense claim. Chapter 135 of the Acts of 2024 did not change self-defense law.
Legal Analysis
11"Readily Converted": The Undefined Middle Ground in Massachusetts Firearms Law
Massachusetts defines a firearm to include an item designed to or readily convertible to expel a shot or bullet and excludes a permanently inoperable firearm. The statute does not provide a general definition of readily converted.
Building a Firearm from a Lower Receiver in Massachusetts
Massachusetts treats qualifying frames, receivers, and unfinished frames or receivers as firearms. Classification depends on statutory readiness and marketing tests, while serialization, registration, licensing, and assault-style-firearm restrictions must be checked separately.
FOPA Safe Passage Through Massachusetts: A Theory, Not a Shield
The Firearms Owners' Protection Act (18 U.S.C. Section 926A) promises safe passage for travelers transporting firearms through states where possession would otherwise be illegal. In practice, Massachusetts treats this as an affirmative defense raised after arrest, not immunity from prosecution. The SJC ruled in Commonwealth v. Marquis (2025) that commuting to a Massachusetts workplace is not "traveling through."
Inheriting Firearms in Massachusetts: Legal Guide for Heirs
Inheriting firearms in Massachusetts involves specific legal requirements including a 60-day grace period, licensing obligations, and registration through the eFA-10 system. This guide covers executor duties, out-of-state inheritance, non-compliant firearms, and step-by-step instructions.
Is My Rifle Legal in Massachusetts? A Compliance Guide
Massachusetts does not use the approved-handgun sales roster for rifles, but Section 121 includes an assault-style firearm roster, named models, copy-or-duplicate rules, and feature tests. This guide explains the complete classification framework.
Marijuana and Firearms in Massachusetts: The Federal-State Conflict
Massachusetts permits adult marijuana possession, but federal firearms law remains separate. A 2026 product-specific Schedule III action, broader pending rescheduling, and the narrow Hemani decision do not create a blanket federal firearms rule for all marijuana users.
Open Carry in Massachusetts: Legal Framework and Practical Limits
Massachusetts law does not expressly require an LTC holder to conceal a carried firearm, but licensing, prohibited-place, public-safety, and conduct rules still apply. No reviewed appellate decision establishes that open carry alone requires license revocation.
Suppressors, New Hampshire, and Dual Residency: A Path That Stays in New Hampshire
Massachusetts prohibits suppressor possession absolutely, with no NFA exception. Federal law permits a person to have dual residency in two states simultaneously, and an NFA transfer can be completed in any state where the buyer is a resident. A Massachusetts resident who genuinely maintains a New Hampshire residence can legally purchase and own a suppressor through their NH residency, provided the suppressor never enters Massachusetts.
The Non-Resident Registration Gap: Mandated to Comply, Unable to Do So
Chapter 135 requires all firearms possessed in the commonwealth to be registered through the MIRCS Unified Gun Portal, but the portal does not support non-resident users. Non-resident Temporary LTC holders are legally required to register but technologically unable to do so. The compliance deadline is October 28, 2026, one week before voters decide whether to repeal Chapter 135 entirely.
Three Grandfathering Dates and the Burden of Proof
Massachusetts law uses different historical dates for large-capacity feeding devices, certain copies or duplicates, and assault-style firearms. The reviewed authorities do not establish one universal proof rule for every grandfathering dispute.
What Counts as a "Locked Container" in Massachusetts
Massachusetts defines a locked container as one opened only by key, combination, or similar means and expressly includes certain locked vehicle compartments. Whether a particular biometric safe or access arrangement complies remains fact-specific.