MASSACHUSETTS FIREARM RETAILER & DEALER COMPLIANCE CENTER
Massachusetts firearm retailers operate under overlapping state licensing, transaction-recording, registration, serialization, firearm-classification, roster, consumer-protection and federal firearm laws.
No single license, roster, database entry or background check answers every compliance question.
Massachusetts firearm retailers operate under overlapping state licensing, transaction-recording, registration, serialization, firearm-classification, roster, consumer-protection and federal firearm laws.
No single license, roster, database entry or background check answers every compliance question.
Can I Complete This Transaction?
Retailer Transaction Navigator
Use this navigator as a starting-point compliance checklist before completing a firearm transaction.
1. Massachusetts Dealer Licensing
Massachusetts firearm dealer and gunsmith licensing is principally governed by M.G.L. c. 140, §§122 and 123.
Age
A qualifying applicant for a Massachusetts dealer or gunsmith license must satisfy the applicable statutory age requirements.
A qualifying applicant for a Massachusetts dealer or gunsmith license must satisfy the applicable statutory age requirements.
Dealer Training
Applicants and renewing dealers must satisfy applicable Massachusetts dealer-training requirements.
Applicants and renewing dealers must satisfy applicable Massachusetts dealer-training requirements.
Business Location
The Massachusetts license identifies the premises at which the licensed business is conducted.
The Massachusetts license identifies the premises at which the licensed business is conducted.
Local Licensing Authority
Dealer licensing involves the licensing authority responsible for the business location.
Dealer licensing involves the licensing authority responsible for the business location.
STATE LICENSE ≠ FEDERAL LICENSE.
A Massachusetts dealer license and a Federal Firearms License are separate requirements where federal law requires an FFL.
A Massachusetts dealer license and a Federal Firearms License are separate requirements where federal law requires an FFL.
2. Dealer Employees
Massachusetts retailers should maintain a written employee onboarding and compliance procedure.
- Determine whether the employee will have direct or unmonitored access to firearms.
- Complete applicable CORI procedures.
- Establish individual MIRCS dealer access where required.
- Do not share MIRCS credentials.
- Train personnel on state and federal transaction procedures.
- Document compliance training.
MIRCS USER ACCOUNTS SHOULD NOT BE SHARED BETWEEN EMPLOYEES.
3. Treat Every Sale as Multiple Compliance Checks
A firearm sale should not be treated as one single approval.
1. Buyer
Identity, residency, age and credential.
Identity, residency, age and credential.
2. Firearm
Correct Massachusetts and federal classification.
Correct Massachusetts and federal classification.
3. Roster
Determine whether a roster requirement or exemption applies.
Determine whether a roster requirement or exemption applies.
4. Configuration
Semiautomatic, large-capacity and assault-style status.
Semiautomatic, large-capacity and assault-style status.
5. Serialization
Verify state and federal serial-number requirements.
Verify state and federal serial-number requirements.
6. Federal Transfer
Determine applicable Form 4473 and federal background-check requirements.
Determine applicable Form 4473 and federal background-check requirements.
7. Massachusetts Reporting
Complete applicable MIRCS transaction reporting.
Complete applicable MIRCS transaction reporting.
8. Documentation
Retain all required state and federal records.
Retain all required state and federal records.
4. Customer Credentials
| Credential | Retailer Starting Point |
|---|---|
| LTC | Provides broader Massachusetts firearm authority, but does not make every firearm, feeding device or transaction lawful. |
| FID | Chapter 135 substantially changed the firearm categories generally authorized by an FID. Semiautomatic and large-capacity issues require particular attention. |
| Nonresident LTC | Verify validity, expiration, transaction type and federal interstate-transfer requirements. |
| Statutory exemption | Document the exact exemption rather than assuming one applies. |
5. FID Card Transactions
DO NOT RELY ON PRE-CHAPTER 135 ASSUMPTIONS ABOUT AN FID.
Current Massachusetts law generally restricts FID firearm authority to rifles and shotguns that are neither large-capacity nor semiautomatic, subject to applicable statutory provisions and exceptions.
GOAL Retailer Warning:
Chapter 135 contains transition language affecting certain existing licenses and possession. Do not automatically convert an argument concerning continued possession into authority for a new retail sale or transfer.
Chapter 135 contains transition language affecting certain existing licenses and possession. Do not automatically convert an argument concerning continued possession into authority for a new retail sale or transfer.
6. Semiautomatic Firearms
Semiautomatic status requires additional review because it can interact with:
- FID authority;
- customer age;
- large-capacity classification;
- assault-style firearm classification;
- feeding-device compatibility;
- hunting restrictions; and
- other Massachusetts laws.
7. Assault-Style Firearms
STOP AND CLASSIFY BEFORE TRANSFER.
Do not rely solely on the manufacturer's description, product name or appearance.
Review M.G.L. c. 140, §121 and current state guidance concerning:
- enumerated firearm families;
- copies and duplicates;
- receivers and internal components;
- semiautomatic rifle feature tests;
- semiautomatic pistol feature tests;
- semiautomatic shotgun feature tests;
- statutory exclusions;
- grandfathering provisions; and
- current assault-style firearm roster information.
8. Large-Capacity Firearms
Massachusetts separately defines large-capacity firearm.
Do not confuse the classification of the firearm with the
classification of the feeding device.
A transaction can present both issues.
9. Feeding Devices & Magazines
Before transferring a feeding device determine:
- maximum capacity;
- whether it is fixed or detachable;
- whether a statutory exclusion applies;
- whether it can readily be converted;
- whether grandfathered status is being claimed; and
- whether the proposed transfer is permitted.
An LTC does not independently establish that every
large-capacity feeding-device transaction is lawful.
10. Handgun Roster
Before transferring a handgun subject to Massachusetts roster requirements, verify the exact:
- manufacturer;
- model;
- configuration; and
- current roster status.
DO NOT USE AN OLD OR SAVED ROSTER AS YOUR FINAL CHECK.
Roster inclusion does not necessarily establish compliance with
the Attorney General's separate handgun-sales regulations.
11. Frames & Receivers
Massachusetts' firearm definition includes qualifying frames and receivers.
Review:
- Massachusetts classification;
- federal classification;
- serialization;
- registration;
- buyer licensing;
- MIRCS reporting; and
- the firearm ultimately assembled from the component.
12. Unfinished Frames & Receivers
Massachusetts can classify certain unfinished frames or receivers
as firearms even when a manufacturer or seller describes the item
differently.
Do not base a transaction only on terms such as:
- "80 percent";
- "unfinished";
- "blank";
- "receiver kit"; or
- "build kit".
13. Serialization
Massachusetts serialization is governed by:
- M.G.L. c. 140, §121C; and
- 501 CMR 20.00.
Serialization issues commonly arise with:
- privately made firearms;
- unserialized firearms;
- frames and receivers;
- unfinished frames or receivers covered by Massachusetts law;
- firearms manufactured or assembled in Massachusetts; and
- certain firearms imported or acquired in Massachusetts.
REGISTRATION AND SERIALIZATION ARE SEPARATE REQUIREMENTS.
14. Registration
Massachusetts firearm registration is governed by:
- M.G.L. c. 140, §121B; and
- 501 CMR 19.00.
When a customer purchases a firearm from a Massachusetts dealer,
the dealer records the applicable transaction through the
Massachusetts system.
15. Shop Inventory
Dealer inventory should be reconciled against:
- physical inventory;
- federal acquisition and disposition records;
- MIRCS records;
- serialization records where applicable;
- consignments;
- repair inventory; and
- dealer-to-dealer transfers.
GOAL Best Practice:
Conduct periodic physical inventory reconciliation rather than waiting for a regulatory inspection to identify discrepancies.
Conduct periodic physical inventory reconciliation rather than waiting for a regulatory inspection to identify discrepancies.
16. Ammunition & Components
Massachusetts defines ammunition broadly.
The definition can include:
- complete cartridges;
- cartridge cases;
- primers or igniters;
- bullets;
- firearm propellant powder; and
- tear-gas cartridges.
Reloading components can therefore present Massachusetts ammunition
sale and possession issues even though they are not complete cartridges.
17. Gunsmithing & Repairs
Retailers performing gunsmithing should distinguish between:
- receipt for repair;
- return of the same firearm;
- replacement of the firearm;
- manufacturing;
- assembly;
- serialization work;
- configuration changes; and
- transfer to another person.
Those distinctions can change state and federal recordkeeping,
manufacturing or transfer requirements.
18. Consignments
Consigned firearms should be tracked under the applicable federal acquisition and disposition requirements.
The eventual sale, disposition or return of a consigned firearm can trigger additional transfer procedures.
19. Interstate Transactions
MASSACHUSETTS ELIGIBILITY DOES NOT OVERRIDE FEDERAL
INTERSTATE-TRANSFER LAW.
For a nonresident transaction determine:
- customer's state of residence;
- firearm type;
- federal dealer-to-dealer requirements;
- customer-state law where applicable;
- Massachusetts requirements; and
- where lawful delivery may occur.
20. ATF Form 4473
Federal law generally requires a properly completed ATF Form 4473 when an FFL transfers a firearm to a nonlicensee, unless an applicable federal exception applies.
Dealer Best Practice:
Use a secondary review of the Form 4473 before the firearm leaves the premises to identify unanswered questions, incorrect entries, or other mistakes.
Use a secondary review of the Form 4473 before the firearm leaves the premises to identify unanswered questions, incorrect entries, or other mistakes.
21. Federal Background Check
Complete the federally required background-check process before delivery whenever the transaction is subject to that requirement.
Do not assume a Massachusetts firearm credential automatically
eliminates every federal background-check requirement.
22. Acquisition & Disposition Records
Maintain accurate acquisition and disposition records covering:
- incoming firearms;
- retail transactions;
- FFL-to-FFL transactions;
- repairs;
- returns;
- consignments;
- lost or stolen firearms; and
- physical inventory.
23. Lost or Stolen Firearms
A Massachusetts retailer can have both state and federal reporting duties when a firearm is lost or stolen.
DO NOT ASSUME ONE REPORT SATISFIES ALL STATE AND FEDERAL
REPORTING REQUIREMENTS.
24. Inspection Readiness
A dealer should be able to readily account for:
- every firearm physically present;
- every firearm disposed of;
- Forms 4473;
- A&D records;
- MIRCS transactions;
- dealer licenses;
- federal licenses;
- employee compliance requirements; and
- required transaction documentation.
25. Daily Counter Checklist
Buyer
Identity, age and residency verified?
Identity, age and residency verified?
Credential
Current and appropriate for the transaction?
Current and appropriate for the transaction?
Firearm Type
Correctly classified?
Correctly classified?
Semiautomatic
Does semiautomatic status affect eligibility?
Does semiautomatic status affect eligibility?
Large Capacity
Firearm or feeding-device issue?
Firearm or feeding-device issue?
Assault-Style
Classification completed?
Classification completed?
Roster
Current roster checked when applicable?
Current roster checked when applicable?
Attorney General Rules
Separate handgun-sale requirements reviewed?
Separate handgun-sale requirements reviewed?
Serialization
Serial-number requirements verified?
Serial-number requirements verified?
Federal Requirements
4473, background check and A&D completed?
4473, background check and A&D completed?
MIRCS
Massachusetts transaction entry completed?
Massachusetts transaction entry completed?
Final Review
Compliance check complete before delivery?
Compliance check complete before delivery?
Stop the Transaction and Review
PAUSE BEFORE TRANSFER IF:
- the customer's credential does not clearly authorize the transaction;
- the firearm's classification is uncertain;
- semiautomatic status creates an FID or age issue;
- large-capacity status is uncertain;
- assault-style firearm status is uncertain;
- roster status cannot be verified;
- the serial number or serialization status is questionable;
- the transaction involves an unfinished frame or receiver;
- the customer's residency creates an interstate issue;
- MIRCS information conflicts with the transaction;
- Form 4473 or background-check requirements remain incomplete; or
- state and federal requirements appear to conflict.
Primary Massachusetts Sources
- M.G.L. c. 140, §121 — definitions.
- M.G.L. c. 140, §121B — firearm registration.
- M.G.L. c. 140, §121C — serialization.
- M.G.L. c. 140, §122 — dealer and gunsmith licensing.
- M.G.L. c. 140, §123 — licensed dealer requirements.
- M.G.L. c. 140, §129B — FID.
- M.G.L. c. 140, §129C — exemptions.
- M.G.L. c. 140, §131 — LTC.
- M.G.L. c. 140, §131M — assault-style firearms and large-capacity feeding devices.
- 501 CMR 19.00 — firearm registration.
- 501 CMR 20.00 — serialization.
- 803 CMR 10.00 — firearm transaction recording.
- Massachusetts Approved Firearms Rosters
- Massachusetts Information for Firearms Dealers
Federal Dealer Sources
GOAL Retailer Compliance Principle
Do not ask only: "Can this customer own a gun?"
For every transaction ask: Who is the buyer? What exactly is the item? What Massachusetts credential applies? How is the item classified? Is this particular transaction authorized? What Massachusetts reporting is required? What federal requirements apply?
Do not ask only: "Can this customer own a gun?"
For every transaction ask: Who is the buyer? What exactly is the item? What Massachusetts credential applies? How is the item classified? Is this particular transaction authorized? What Massachusetts reporting is required? What federal requirements apply?
Last reviewed:
September 23, 2026.
This resource provides general educational and compliance information for Massachusetts firearm retailers. It is not a substitute for current statutes, regulations, agency guidance, ATF requirements or individualized legal advice.
This resource provides general educational and compliance information for Massachusetts firearm retailers. It is not a substitute for current statutes, regulations, agency guidance, ATF requirements or individualized legal advice.