MA Public Firearms Data Dashboard: What It Tracks

Massachusetts General Laws Chapter 140, Section 121E^[1], created by Chapter 135 of the Acts of 2024^[2], mandates a publicly accessible online data dashboard containing non-personally identifying firearms data, updated at least quarterly. DCJIS, in collaboration with EOPSS and the Executive Office of Technology Services and Security (EOTSS), collects, assembles, and publishes data on firearms use in the Commonwealth.

Required Data

The dashboard must publish two categories of data:

Licensing data: Age, gender, race, ethnicity, and municipality of LTC and FID applicants and denied applicants
Firearm violence data: Type of violence, demographics of firearm users and victims, geographic location, license status of firearm user, whether the user was a prohibited person, arrest information, prosecution disposition, connection to gang activity or domestic disputes, make/model/manufacturer of firearm, origin and secondary market source, and whether the firearm was lost, stolen, untraceable, or privately made

Penalties

No specific criminal penalties. Section 121E is a data collection and publication mandate directed at state agencies.

Related Provisions

Section 121B (the electronic registration system) feeds data into this dashboard. Chapter 66, Section 10B was amended to permit data transmission to DCJIS for this purpose. Chapter 6A, Section 18¾ was amended to add an analysis to the biennial firearms report of the secretary of public safety and security. The analysis examines whether the license number used to buy or transfer a firearm used in a crime or suicide was linked to other firearm purchases or transfers.

Referendum Status

Created by Chapter 135, this section would be repealed if the November 2026 referendum succeeds.

Verification

8 of 8 factual claims on this page were matched to their source text as of 2026-10-07.

Show the claims

Factual claims on this page and their verification status
Claim	Type	Status	Source	Checked
MGL Chapter 140, Section 121ESource text: # § 121E Publication of information relating to the use of firearms; information included; promulgation of rules and regulations Section 121E. (a) The departme	STAT	verified against source	None	2026-10-07
Chapter 140, Section 121ESource text: # § 121E Publication of information relating to the use of firearms; information included; promulgation of rules and regulations Section 121E. (a) The departme	STAT	verified against source	None	2026-10-07
Chapter 135 of the Acts of 2024Source text: # St. 2024, c. 135: An Act Modernizing Firearm Laws ## SECTION 1. Section 172M of chapter 6 of the General Laws, as appearing in the 2022 Official Edition, is	SESSION_LAW	verified against source	None	2026-10-07
Chapter 66, Section 10BSource text: # § 10B Records divulging name, home or email address and phone number; persons who own, possess or have license to carry firearms; government personnel Sectio	STAT	verified against source	None	2026-10-07
Chapter 6A, Section 18Source text: # § 18 Agencies within executive office of public safety and security Section 18. The following state agencies are hereby declared to be within the executive o	STAT	verified against source	None	2026-10-07
MGL Chapter 140, Section 131PSource text: # § 131P Basic firearms safety certificate; instructors; public service announcements [Text of section effective until January 25, 2026. For text effective Jan	STAT	verified against source	None	2026-10-07
MGL Chapter 140, Section 121BSource text: # § 121B Real time electronic firearms registration system; timing or registration; loss or theft of firearm; applicable firearms; failure to register; promulga	STAT	verified against source	None	2026-10-07
MGL Chapter 140, Section 121DSource text: # § 121D 3-dimensional printers and computer numerical control milling machines; use; sale or transfer; application; violations Section 121D. (a) No person sha	STAT	verified against source	None	2026-10-07

MGL Chapter 140, Section 121E:
Public Firearms Data Dashboard