With the firearms registration requirements under Chapter 135 of the Acts of 2024, An Act Modernizing Firearm Laws, now weeks away, gun owners across the Commonwealth are trying to work out exactly when they have to comply. Unfortunately, some of the information circulating online is wrong and certain attorneys are incorrectly stating in video posts that the registration deadline is October 2nd. It is not.
On September 18, 2026, the Executive Office of Public Safety and Security (EOPSS) issued Guidance #5, its updated set of Frequently Asked Questions on the new law. It confirms that individuals are not required to comply with the registration and serialization requirements of G.L. c. 140, §§121B and 121C until October 28, 2026, under Section 157 of the Act.
Here is what you need to know:
Do I have to register all my firearms?
Yes. But you are not required to register them in the new system until October 28, 2026. If you already registered your firearms through the existing transaction portal, you do not have to register them again.
How do I know if my firearms are already registered?
If you have an FA-10 form from a Massachusetts dealer sale, a personal registration, or a personal transfer, that firearm has been registered. If you are unsure, you can request your records from the Firearms Records Bureau for a fee. EOPSS also notes that there is no penalty for registering a firearm again, so when in doubt, registering is the safe choice.
Where do I register?
The serialization and registration systems are already live and can be reached through the MIRCS portal on Mass.gov.
I’m buying from a dealer. Do I also have to register in the portal?
No. The dealer records the transaction.
I registered a frame or receiver. Do I have to register it again once it is built into a firearm?
Yes. Once the firearm is completed, it must be registered again.
Does my firearm need a new serial number?
If your firearm already has a serial number, you do not need to request one from the MIRCS Serialization System. Firearms made before October 22, 1968 are exempt from serialization.
I’m moving to Massachusetts. What about me?
New residents have 60 days to obtain a Massachusetts firearms license, and must register their firearms once the license is issued.
What about nonresidents?
A nonresident traveling in or through Massachusetts, or possessing a rifle or shotgun under one of the exemptions in G.L. c. 140, §129C, does not have to register that firearm.
This is why experience matters!
When you choose a lawyer to advise you on Massachusetts firearms law, experience matters. Attorney Guida is the former Director of the Massachusetts Firearms Records Bureau, the agency that administers firearms licensing and registration records in the Commonwealth. He served as Counsel to the Firearms Licensing Review Board, was a member of the Gun Control Advisory Board, and prosecuted firearms cases as an Assistant District Attorney. He has trained and advised local, state and federal law enforcement on firearms licensing and firearms-related investigations is a Founding Member of the American Council of Second Amendment Lawyers and a referral attorney for self-defense insurance providers, including USCCA.
Massachusetts firearms law and firearms rights is what we do and all we do…..
If you have questions about registering your firearms, an inherited collection, a frame or receiver build, or any other issue under the new law, don’t rely on a social media post or a guess about the date. Get the right answer before October 28th.
Contact the Law Office of Jason A. Guida dba 2nd Amendment Legal at (617) 383-4652.
This post is for general informational purposes and is not legal advice. Reading it does not create an attorney-client relationship.


