Semi-auto rifles are legal in Connecticut if they clear two hurdles: the model isn’t on the state’s banned-firearms list, and, for centerfire designs that take a detachable magazine, the rifle carries none of the prohibited tactical features. Add a magazine that holds no more than ten rounds and the right permit, and you can own it.
What Makes a Semi-Auto Rifle Illegal Here
Connecticut’s assault weapon law runs on two parallel tests. A rifle fails if it trips either one.
The Named-Firearms List
The statute bans specific models by name across two lists. The 1993 list includes the Colt AR-15, AK-47 variants, the Uzi, and the MAC-10, among dozens of others. A second list added in 2013 names the AR-10, AR-15, DPMS Tactical Rifles, Smith & Wesson M&P15 Rifles, Kel-Tec Sub-2000, SIG Sauer 556, and many more. “Copies or duplicates” of these rifles that share the same capabilities are also banned.1Justia. Connecticut Code 53-202a – Assault Weapons Definitions
The One-Feature Test
A rifle not named in the statute can still qualify as an assault weapon. If it’s semi-automatic, centerfire, and accepts a detachable magazine, having even one of the following features makes it illegal:1Justia. Connecticut Code 53-202a – Assault Weapons Definitions
- A folding or telescoping stock
- A grip that lets a finger other than the trigger finger sit directly below the action (pistol grips, thumbhole stocks, and similar designs)
- A forward pistol grip
- A flash suppressor
- A grenade or flare launcher
One feature is enough. This is where most AR-15- and AK-pattern rifles fail in their factory configurations, regardless of maker or model name.
Semi-Auto Rifles You Can Legally Own
Three categories of semi-automatic rifles pass Connecticut’s rules.
Featureless Centerfire Rifles
Build or buy a rifle with a fixed stock, a grip that keeps all fingers above the action, no forward grip, no flash suppressor, and no launcher, and the one-feature test doesn’t bite. Several manufacturers sell Connecticut-compliant rifles already set up this way. Owners of existing rifles can bring them into compliance by swapping components: a fixed stock in place of a collapsible one, a grip wrap or fin grip in place of a pistol grip, a muzzle brake in place of a flash hider. A muzzle brake is not a flash suppressor and is not banned.
Fixed-Magazine Rifles
The one-feature test only reaches rifles that accept a detachable magazine. A semi-automatic centerfire rifle with a permanently fixed magazine of ten rounds or fewer sits outside that test entirely, which means it can wear a pistol grip, folding stock, or other otherwise prohibited features. Some manufacturers build AR-15-platform rifles with permanently affixed ten-round magazines specifically for states like Connecticut.
Rimfire Rifles
The one-feature test applies only to centerfire rifles. Semi-automatic rimfire rifles, such as the Ruger 10/22, are governed by an older two-feature test, which is generally less restrictive.2Connecticut General Assembly. Summary of State Gun Laws A factory Ruger 10/22 doesn’t carry two prohibited features and stays legal. Rimfire rifles still have to comply with the ten-round magazine cap.
The Ten-Round Magazine Limit
Every legal rifle in Connecticut is tied to the magazine rule. The state defines a “large capacity magazine” as any magazine, belt, drum, feed strip, or similar device that holds more than ten rounds. Tubular .22 caliber feeding devices and tubular magazines in lever-action rifles are exempt.3Justia. Connecticut Code 53-202w – Large Capacity Magazines
The declaration window for pre-2013 large capacity magazines closed on January 1, 2014. A declared magazine can still be possessed, but it cannot be loaded past ten rounds except at a licensed range or organized competition. Possessing an undeclared large capacity magazine is a Class A misdemeanor for most people and a Class D felony for anyone otherwise ineligible to possess firearms.3Justia. Connecticut Code 53-202w – Large Capacity Magazines
What You Need to Buy One
A legal rifle still requires a legal buyer. Connecticut gates every rifle purchase behind a permit, a background check, and in some cases an age bump.
Long Gun Eligibility Certificate or Pistol Permit
You need either a Long Gun Eligibility Certificate or a Connecticut Pistol Permit to buy any rifle. A pistol permit covers both handguns and long guns, so permit holders don’t need the separate certificate.4Connecticut Department of Emergency Services and Public Protection. Firearms and Permit Related Forms and Information
The certificate application requires a state-approved firearms safety course, a background check, and clean eligibility (no felony convictions, no recent domestic violence misdemeanors, no recent psychiatric commitments, among other disqualifiers). For applications filed on or after July 1, 2024, the safety course must have been completed within two years and must cover safe storage, lawful use, and lawful carrying in public.5Justia. Connecticut Code 29-37p – Long Gun Eligibility Certificate The certificate lasts five years. Renewal costs $35 and must be requested within 31 days before or after expiration, with a 90-day grace period that keeps the certificate valid while the renewal processes.6Justia. Connecticut Code 29-37r – Long Gun Eligibility Certificate Fees, Expiration and Renewal
Age
The minimum age for a long gun is 18. For a semi-automatic centerfire rifle that accepts a magazine holding more than five rounds, the minimum is 21. That higher threshold captures nearly every semi-auto centerfire rifle on the market, since few are designed around a five-round magazine.7Justia. Connecticut Code 29-37a – Sale, Delivery or Transfer of Long Guns
Background Check on Every Transfer
Every rifle transfer in Connecticut requires a background check through DESPP, whether the seller is a licensed dealer or a private individual. Private sellers can either run the paperwork and obtain an authorization number directly or ask a federally licensed dealer to initiate the check. DESPP must authorize the transfer before it can happen.7Justia. Connecticut Code 29-37a – Sale, Delivery or Transfer of Long Guns
Bringing a Rifle Into Connecticut
If you’re moving in, the assault weapon ban attaches the moment you cross the state line. A rifle that was legal in your prior state does not become legal here, and the registration windows for grandfathering have all closed, so there is no path for a new resident to register an otherwise prohibited rifle. Check every semi-auto rifle against the named list and the one-feature test before the move. Rifles that fail either need to be sold, left out of state, or reconfigured into a compliant setup before entering Connecticut.
Non-residents have a limited exception for transporting firearms into or through the state for organized shooting competitions, training, or gun shows. The firearm must be unloaded and stored outside the passenger compartment, or in a locked container if the vehicle has no separate compartment. The exception does not override the assault weapon ban. Non-residents cannot bring banned firearms or large capacity magazines into Connecticut for competition unless a specific statutory exemption applies.
What’s at Stake if You Get It Wrong
Possessing an unregistered assault weapon in Connecticut is a Class D felony, carrying up to five years in prison and a fine of up to $5,000. The statute imposes a mandatory minimum of one year that a court cannot suspend or reduce. A narrow first-offense mitigation exists for people who lawfully possessed the weapon before the relevant ban date and otherwise complied with the certificate rules, but it does not help anyone who acquired the weapon after the ban or never registered it.8Justia. Connecticut Code 53-202c – Possession of Assault Weapon Prohibited The margin between a legal featureless rifle and a felony-grade assault weapon can be a single component, so check the configuration before you buy, build, or carry anything across state lines.