Connecticut’s magazine capacity limit is ten rounds. Any firearm magazine, belt, drum, feed strip, or similar device that holds or can be readily restored to accept more than ten rounds is a “large capacity magazine” under state law, and possessing one without a prior declaration on file with the state is a criminal offense.1Justia. Connecticut General Statutes Title 53 – Section 53-202w The rule took effect in 2013 under Public Act 13-3 and was restructured in 2023. Whether you already own firearms in Connecticut, plan to buy one, or are moving to the state, the details below decide whether you’re compliant or facing a felony.
What Qualifies as a Large Capacity Magazine
The statute’s “readily restored or converted” language does real work. A fifteen-round magazine pinned to hold ten still qualifies as a large capacity magazine if the pin can be removed without specialized tools or permanent modification. Only permanent alteration takes a magazine out of the definition.
Four categories fall outside the definition entirely, regardless of round count:
- Magazines permanently modified so they physically cannot hold more than ten rounds.
- Tubular feeding devices for .22 caliber rimfire firearms.
- Tubular magazines built into lever-action rifles, regardless of caliber.
- Magazines rendered permanently inoperable, such as welded or deactivated display pieces.
Federal “curio or relic” status does not create an exemption. Connecticut’s law contains no carve-out for curio or relic firearms or their magazines, and licensed collectors face the same restrictions as everyone else.2Connecticut General Assembly. Public Act No. 13-3 – An Act Concerning Gun Violence Prevention and Children’s Safety
The Declaration Window Is Closed
Owners who legally possessed a large capacity magazine before Public Act 13-3 took effect had until January 1, 2014, to declare it with the Department of Emergency Services and Public Protection (DESPP).2Connecticut General Assembly. Public Act No. 13-3 – An Act Concerning Gun Violence Prevention and Children’s Safety Military members stationed outside the state had ninety days after returning to file. That window is closed. There is no current mechanism to register a previously undeclared magazine, and a declared magazine remains subject to the loading and transport rules described below.
Penalties for Possession
Public Act 23-53 restructured the penalty system in 2023. The current rules turn on whether the person holding the magazine is otherwise eligible to own firearms.3Connecticut General Assembly. Public Act No. 23-53 – An Act Concerning Gun Violence Prevention
- Someone ineligible to possess firearms under state or federal law (due to a felony conviction, domestic violence restraining order, or other disqualifying factor) who possesses any large capacity magazine commits a Class D felony, punishable by up to five years in prison and fines up to $5,000.
- Someone otherwise eligible to possess firearms who holds an undeclared large capacity magazine commits a Class A misdemeanor, punishable by up to 364 days in jail and fines up to $2,000.
The misdemeanor category is still a criminal charge with a permanent record. The safer path is confirming that every magazine you own holds ten rounds or fewer, or was properly declared before the 2014 deadline.
Buying, Selling, and Bringing One Into the State
Connecticut treats distribution, importation, sale, and purchase of large capacity magazines more harshly than mere possession. Any of these acts is a Class D felony regardless of the person’s firearms eligibility, carrying up to five years in prison and fines up to $5,000.1Justia. Connecticut General Statutes Title 53 – Section 53-202w Transferring a large capacity magazine to another person inside the state is also a Class D felony, with narrow exceptions for inheritance and for surrender to law enforcement or a licensed dealer.
Buying a magazine out of state and bringing it home is not a workaround. Importing a large capacity magazine into Connecticut is treated the same as selling one inside the state, and online purchases shipped to a Connecticut address carry the same risk.
Who Is Exempt
Only a few categories of people may legally possess, purchase, or import large capacity magazines:1Justia. Connecticut General Statutes Title 53 – Section 53-202w
- Sworn law enforcement officers, including members of organized police departments, the Division of State Police, the Department of Correction, certain inspectors in the Division of Criminal Justice, designated motor vehicle inspectors, conservation officers, and certified constables performing criminal law enforcement duties. The exemption covers on-duty and off-duty possession.
- Active members of the military or naval forces of Connecticut or the United States.
- Gun dealers holding both a federal firearms license and a Connecticut permit to sell firearms, for business purposes.
- Persons performing legitimate repair work on a large capacity magazine in the course of business.
There is no exemption for competitive shooters, private firearms instructors, or security guards without law enforcement certification. If your work or hobby calls for magazines over ten rounds and you don’t fall into one of the listed categories, you cannot legally use them in Connecticut.
Loading and Transporting a Declared Magazine
A valid declaration lets you keep the magazine. It does not let you fill it. Declared magazines may hold no more than ten rounds at all times, whether at home, at a shooting range, or in transit.4Justia. Connecticut General Statutes Title 53 – Section 53-202x A thirty-round declared magazine is legal to own but illegal to load past ten.
Transport rules track those for assault weapons. The magazine must contain no more than ten rounds, cannot be loaded in a firearm, and must be stored in the trunk or in a locked container inaccessible to the driver and passengers.5Connecticut General Assembly. Connecticut General Statutes Chapter 943 – Offenses Against Public Peace and Safety Carrying a loaded large capacity magazine concealed from public view while transporting it is a Class E felony.
Moving to Connecticut With Magazines You Already Own
New residents who lawfully owned large capacity magazines in their previous state have ninety days after arriving to choose one of three options:4Justia. Connecticut General Statutes Title 53 – Section 53-202x
- Render the magazine permanently inoperable through physical modification.
- Sell it to a licensed gun dealer.
- Remove it from the state, whether by shipping it to someone in a state where it is legal or storing it outside Connecticut.
Declaring and keeping the magazine functional is not an option. That door closed in January 2014, and no current provision of Connecticut law lets a new resident register and retain a large capacity magazine.
Inheriting a Large Capacity Magazine
Connecticut allows transfer of a large capacity magazine by bequest or intestate succession, but only if the magazine was properly declared with DESPP before the original owner’s death.1Justia. Connecticut General Statutes Title 53 – Section 53-202w Executors, administrators, and trustees may hold the magazine during probate, provided the declaration is on file and the Probate Court authorizes the disposition.
Undeclared magazines cannot lawfully pass through an estate. An executor who finds them should surrender the magazines to DESPP or a local police department rather than distribute them to heirs, since possessing an undeclared magazine is itself a criminal offense for whoever ends up holding it.
Passing Through Connecticut With a Magazine From Another State
Federal law offers a limited safe-passage protection under 18 U.S.C. § 926A. You may transport a firearm through any state if you can legally possess it at both your origin and destination, the firearm is unloaded, and neither the firearm nor ammunition is readily accessible from the passenger compartment.6Office of the Law Revision Counsel. 18 U.S. Code 926A – Interstate Transportation of Firearms Vehicles without a separate trunk require a locked container other than the glove compartment or console.
Connecticut permits nonresidents to transport firearms through the state without a Connecticut permit so long as they meet the federal requirements.7Connecticut General Assembly. Summary of State Gun Laws The federal protection has real limits, though. Overnight stops, errands, or anything beyond a brief fuel or rest break can destroy the “passing through” defense. Once you’re staying in the state for any meaningful duration, Connecticut’s magazine laws apply, and the pass-through provision no longer shields you.
What Practical Compliance Looks Like
Most popular firearm platforms ship with standard-capacity magazines that exceed Connecticut’s limit. A pistol arriving from an out-of-state retailer with a fifteen-round magazine needs a compliant ten-round magazine before it can be lawfully brought into the state. The firearm itself is usually not the problem; the magazine is.
Pending Legislation to Watch
As of early 2025, HB 7052 was introduced in the Connecticut legislature. It would raise the large capacity magazine threshold from more than ten rounds to more than fifteen rounds, effective October 1, 2025. If enacted, magazines holding eleven to fifteen rounds would no longer be classified as large capacity magazines and could be possessed without a prior declaration. Penalties for magazines above the new threshold would remain in place. Before assuming any change is in effect, verify the status of this bill with DESPP or the Connecticut General Assembly, since the difference between the proposed and current rules decides what you can legally own.