These are unofficial versions of Massachusetts General Laws. Please note that sections that appear missing have been either reserved for future use or repealed.
Sale of firearms and other weapons
- This page, Mass. General Laws c.140 §§ 121-131Q, is offered by
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- Massachusetts Court System
Mass. General Laws c.140 §§ 121-131Q
Table of Contents
§ 121 Firearms sales; definitions; antique firearms; application of law; exceptions
Amended by St. 2024, c. 135, §§ 15-31, effective October 2, 2024
§ 121B Electronic firearms registration system; penalties; regulations
Added by St. 2024, c. 135, § 32, effective October 2, 2024
§ 121C Serial numbers; privately made firearms
Added by St. 2024, c. 135, § 32, effective October 2, 2024
§ 121D Firearms manufactured or assembled by 3-dimensional printers or computer numerical control milling machines; requirements; exceptions; penalties
Added by St. 2024, c. 135, § 32, effective October 2, 2024
§ 121E Collection of and publishing firearms data; rules and regulations
Added by St. 2024, c. 135, § 32, effective October 2, 2024
§ 121F Licensing authority procedure for firearms applications and renewals; applicant or licensee appeals
Added by St. 2024, c. 135, § 32, effective October 2, 2024
§ 122 Business licenses; requirements; prohibitions
Amended by St. 2024, c. 135, § 33, effective October 2, 2024
§ 122B Sporting and shooting clubs; sale and supply of ammunition
Amended by St. 2024, c. 135, § 34, effective October 2, 2024
§ 122C Illegal sale or possession of self-defense spray; penalty for violation
Amended by St. 2024, c. 135, § 35, effective October 2, 2024
§ 122D Persons prohibited from purchase or possession of self-defense spray; penalty for violation
Amended by St. 2024, c. 135, § 36, effective October 2, 2024
§ 123 Conditions of licenses
Amended by St. 2024, c. 135, § 37, effective October 2, 2024
§ 125 Forfeiture or suspension of licenses; notice / Training seminars and programs
Amended by St. 2024, c. 135, § 38, effective April 23, 2026
§ 126 Placards, signs or advertisements; prima facie evidence
Amended by St. 2024, c. 135, § 39, effective October 2, 2024
§ 128 Penalty for violation of statute on selling, renting or leasing weapons; evidence on sale of machine gun
Amended by St. 2024, c. 135, § 40, effective October 2, 2024
§ 128A Licenses to carry; permitted activities; other purchases and transfers
Amended by St. 2024, c. 135, § 41, effective effective October 2, 2024
§ 128B Unauthorized purchase of firearms; report to commissioner; penalties
Amended by St. 2024, c. 135, § 42, effective effective October 2, 2024
§ 129 Fictitious name or address and other false information; penalties
Amended by St. 2024, c. 135, § 43, effective October 2, 2024
§ 129B Firearm identification cards; conditions and restrictions
Amended by St. 2024, c. 135, § 44, effective October 2, 2024
§ 129C Application of Sec. 129B; ownership or possession of firearms or ammunition; transfers; report to commissioner; exemptions; exhibiting license to carry, etc. on demand
Amended by St. 2024, c. 135, § 45, effective October 2, 2024
§ 129D Surrender of firearms and ammunition to licensing authority upon denial of application for, or revocation of, identification card or license; right to transfer; sale by colonel of state police; rules and regulations
Amended by St. 2024, c. 135, § 46, effective October 2, 2024
§ 131 Licenses to carry firearms; conditions and restrictions
Amended by St. 2024, c. 135, § 49, effective October 2, 2024
§ 131 1/2 Firearm control advisory board
Amended by St. 2024, c. 135, § 50, effective October 2, 2024
§ 131 3/4 Roster of assault-style firearms
Amended by St. 2024, c. 135, § 51, effective October 2, 2024
§ 131A Permits to purchase, rent or lease firearms, or to purchase ammunition; fee; penalties
Amended by St. 2024, c. 135, § 52, effective October 2, 2024
§ 131B Penalty for loan of money secured by weapons
Amended by St. 2024, c. 135, § 53, effective October 2, 2024
§ 131C Carrying of firearms in a vehicle
Amended by St. 2024, c. 135, §§ 54-58, effective October 2, 2024
§ 131F Nonresidents or aliens; temporary license to carry firearms or ammunition
Amended by St. 2024, c. 135, §§ 60-63, effective October 2, 2024
§ 131L Firearms stored or kept by owner; inoperable by any person other than owner or lawfully authorized user; punishment
Amended by St. 2024, c. 135, §§ 67-70, effective October 2, 2024
§ 131M Assault-style firearm or a large capacity feeding device not lawfully possessed on September 13, 1994; sale, transfer or possession; punishment
Amended by St. 2025, c. 14, § 45, effective August 5, 2025
§ 131N Covert or undetectable firearms; sale, manufacture, transfer or possession; punishment
Amended by St. 2024, c. 135, § 72, effective October 2, 2024
§ 131P Basic firearms safety certificate; instructors; public service announcements
Amended by St. 2024, c. 135, § 74, effective October 2, 2024
§ 131Q Tracing by licensing authority of firearm, rifle or shotgun, large capacity weapon, machine gun or assault weapon used to carry out criminal act; statistical data; annual report
Amended by St. 2024, c. 135, § 75, effective April 23, 2026
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