Firearms discharge within the City of Boston is regulated primarily through the state-law framework rather than a standalone municipal ordinance.[1]
State Law: MGL Chapter 269, Section 12E
MGL Chapter 269, Section 12E[2] prohibits discharging a firearm, as that term is defined in MGL Chapter 140, Section 121, within 500 feet of a dwelling or other building in use, except with the owner or legal occupant's consent. Penalties include a fine of $50 to $100, imprisonment up to 3 months, or both.
Exceptions
- Lawful defense of life and property
- Law enforcement officers acting in their duties
- Blank cartridges for theatrical, athletic, ceremonial, firing squad, or other purposes in accordance with section 39 of chapter 148
Municipal Authority
Municipal discharge rules rest on home-rule authority and the general police power in MGL Chapter 40, Section 21(1), including the power to preserve peace and maintain internal police. Section 21(1) does not itself contain a firearm-discharge rule. In Amherst v. Attorney General (1986), the SJC upheld a local discharge bylaw. Separately, MGL Chapter 269, Section 12E contains the 500-foot rule and its owner-or-occupant consent provision.
Preemption
Massachusetts has limited preemption of local firearms regulation. Under Connors v. City of Boston, 430 Mass. 31 (1999), a local rule is invalid only when it is in "sharp conflict" with state law, which appears when the Legislature clearly intended to preclude local action or when the purpose of the state statute cannot be achieved in the face of the local rule.
Verification
5 of 5 factual claims on this page were matched to their source text as of 2026-10-15.
Show the claims
| Claim | Type | Status | Source | Checked |
|---|---|---|---|---|
| MGL Chapter 269, Section 12ESource text: # § 12E Discharge of a firearm within 500 feet of a dwelling or other building in use; exceptions Section 12E. (a) Whoever discharges a firearm as defined in s | STAT | verified against source | None | 2026-10-07 |
| MGL Chapter 140, Section 121Source text: # § 121 Firearms sales; definitions; antique firearms; application of law; exceptions Section 121. As used in sections 122 to 131Y, inclusive, the following wo | STAT | verified against source | None | 2026-10-07 |
| MGL Chapter 40, Section 21(1)Source text: # § 21 By-laws of towns; purpose Section 21. Towns may, for the purposes hereinafter named, make such ordinances and by-laws, not repugnant to law, as they may | STAT | verified against source | None | 2026-10-07 |
| Amherst v. Attorney GeneralSource text: Amherst v. Attorney General (398 Mass. 793 (1986)) | CASE | verified against source | None | 2026-10-07 |
| Connors v. City of BostonSource text: Connors v. City of Boston (430 Mass. 31 (1999)) | CASE | verified against source | None | 2026-10-15 |
Sources
[1] City of Boston. Municipal Code, Chapter 16
[2] Massachusetts Legislature. MGL Chapter 269, Section 12E
Chapter 269, Section 12E
Related
- Firearm Storage Rules in Cambridge, Massachusetts
- 940 CMR 16.00: AG Handgun Sales Regulations
- 501 CMR 7.00: Approved Firearms Roster Regulations
- 501 CMR 7.07: Roster Form and Publication
- Chapter 135 of the Acts of 2024: An Act Modernizing Firearm Laws
- Chapter 284 of the Acts of 2014: Massachusetts Gun Reform