Connecticut’s New Ban and the Race to Court
On September 21, 2026, Glock, Inc. walked into the U.S. District Court for the District of Connecticut and filed a 31-page complaint against the officials who would enforce the state’s new handgun restrictions. The same day, the National Shooting Sports Foundation, Glock-pattern manufacturer Shadow Systems, and Wallingford retailer Blue Trail Range filed a companion case. Both suits target House Bill 5043, enacted as Public Act 26-41, which makes it a Class D felony to import, advertise, sell, or offer for sale a “convertible pistol” manufactured on or after October 1, 2026. Violations carry up to five years in prison and a $5,000 fine.
The lawsuits arrive nine days before the effective date. Glock also asked for a temporary restraining order and preliminary injunction so dealers are not forced to guess, under threat of felony prosecution, which pistols they may still sell. Connecticut Attorney General William Tong responded that the state’s “commonsense gun laws are lawful and lifesaving” and that he would “aggressively defend” them.
The fight is not over every handgun in Connecticut. It is over a specific internal geometry, a wave of copycat state laws, and a legal theory that has already produced parallel litigation in California, Maryland, and New York.
What the Law Actually Prohibits
Public Act 26-41 does not confiscate existing pistols and does not require current owners to register or surrender guns they already lawfully possess. It restricts future commerce. After October 1, it is a felony to knowingly import, advertise, sell, offer, or expose for sale a newly manufactured “convertible pistol.”
The statute defines that term as a semiautomatic pistol with a cruciform trigger bar that can be “readily altered” by hand or with a common household tool so that a “pistol converter” — the small aftermarket device commonly called a Glock switch — will turn the gun into a machine gun. The law contemplates an exemption for pistols that incorporate a non-removable piece molded into the frame that shields the trigger bar. It does not define “readily altered,” “readily converted,” or “readily removed.” That silence is the core of Glock’s first claim.
A cruciform trigger bar is the cross-shaped internal component that moves back and down when the trigger is pulled and releases the striker. Glock popularized the design. It is now used across a large family of polymer-framed, striker-fired pistols made by Glock and by companies that build Glock-pattern guns. Industry filings say more than 500,000 such pistols are manufactured each year for the U.S. civilian market by firms including Glock, Shadow Systems, Ruger, Palmetto State Armory, Derya, and Beretta through Stoeger. Plaintiffs note that the same design is issued to Connecticut State Police and to a large majority of municipal agencies in the state.
Governor Ned Lamont signed the bill in late May 2026. He called it a “commonsense law that prioritizes public safety while respecting the rights of responsible gun owners,” and argued that states must act because Congress has not. The measure followed similar statutes in California, Maryland, and New York.
Why Connecticut Targeted the Design
Supporters frame the bill as a response to illegal machine-gun conversion devices. A Glock switch is a compact part, often 3-D printed, that can be fitted to certain pistols so that a single trigger pull produces fully automatic fire. Possessing an unregistered conversion device is already a serious federal crime under the National Firearms Act, with penalties that can include a decade in prison. Connecticut already treats the devices as illegal. The state’s theory is that the underlying pistol design makes conversion too easy, so the commercial pipeline for new pistols of that type should be closed.
Federal seizure data has been cited throughout the debate. ATF figures reported during the legislative fight showed recovered switches rising from 658 in 2019 to 5,816 in 2023. Gun-control groups, including Everytown for Gun Safety — an organization formed after the 2012 Sandy Hook massacre in Newtown — backed the Connecticut bill as a complement to the state’s existing assault-weapon and magazine rules.
Dealers in the state reported a sales spike while the bill moved. Estimated Connecticut handgun sales rose sharply in early 2026 as buyers anticipated the cutoff. Industry advocates argued then, and argue now, that the surge proves demand among lawful purchasers, not that the pistols themselves are the crime problem.
Glock’s Case: These Guns Are Not Covered — and the Statute Is Too Vague
Glock’s complaint, Glock, Inc. v. Griffin, is narrower than the industry-wide suit filed the same day. The company first asks the court to declare that the pistols it currently sells to the civilian market are not “convertible pistols” at all. Those models are the Slimline series (including the 42, 43, 43X, and 48), the V Series, and Gen6.
Glock says the Slimline pistols are too narrow to accept known conversion devices. The V Series and Gen6 use what the company calls a “triple block”: reinforced rear frame rails, steel domes in the slide, and a modified slide-cover plate. Glock points to a July 8, 2025, ATF examination of a Gen6 Glock 19, which it says found that the system blocked every conversion device tested and that a hardened steel bracket molded into the frame was not easily altered. The company stopped manufacturing, importing, and selling new Gen5 and earlier standard-width pistols for the American civilian market as of December 1, 2025, replacing them with V Series and Gen6 guns. Slimline production continues.
The complaint describes an August 27 meeting with seven lawyers from the Attorney General’s office and two State Police firearms-unit representatives. Glock brought sample pistols. According to the filing, troopers acknowledged that dealers were asking whether the new models would be banned — and that the unit did not know the answer. No written guidance followed. Glock argues that Connecticut’s roughly 659 federal firearms licensees, including 35 Glock stocking dealers, cannot be expected to risk a felony on an undefined phrase. The law also contains no clear exception for post-October 1 sales to police agencies, even though Glock pistols are standard issue for most Connecticut departments.
If the court holds that the current models are covered, Glock’s backup claims attack the statute itself. It argues the ban is void for vagueness under the Fourteenth Amendment because even the people charged with enforcing it cannot say what it covers. It argues the advertising ban violates the First Amendment by criminalizing undefined “advertising,” which could reach websites, manuals, and dealer counter materials. And it argues that banning a class of commonly owned semiautomatic handguns because criminals might attach an already-illegal device violates the Second Amendment as applied through the Fourteenth.
The NSSF Suit: The State Cannot Ban the Gun Because the Switch Is Illegal
The second case, National Shooting Sports Foundation v. Griffin, No. 3:26-cv-01528, does not depend on Glock’s redesign. NSSF, Shadow Systems, and Blue Trail Range argue that Connecticut has no constitutional authority to ban future sales of ordinary, unmodified semiautomatic handguns merely because a criminal could attach a machine-gun conversion device. “Connecticut is punishing the handgun and the law-abiding gun owner instead of the criminal who illegally converts it,” the complaint states.
Shadow Systems builds American-made Glock-pattern pistols. It says it shipped more than $204 million in products nationwide from 2021 through August 2026, the vast majority cruciform-trigger guns, including more than $530,000 in sales into Connecticut. California’s similar ban, the company says, already cost it nearly $3.8 million a year. Blue Trail Range, a Connecticut retailer, says those pistols are a substantial share of its business and that customers leave when the guns they want are pulled from the counter.
The industry complaint leans on District of Columbia v. Heller, which described the handgun as the “quintessential self-defense weapon,” and on the Supreme Court’s later history-and-tradition test in New York State Rifle & Pistol Association v. Bruen. Plaintiffs argue there is no American tradition of banning a common arm because an illegal aftermarket part exists. They draw an analogy to short-barreled shotguns: the law has long punished the illegal modification, not the ordinary shotgun. They also warn there is no limiting principle. If convertibility by an illegal device is enough, “virtually any semiautomatic weapon” could be next — a line NSSF put in its complaint and that Courthouse News highlighted the day the cases were filed.
The NSSF plaintiffs asked for emergency injunctive relief before October 1. Their theory is broader than Glock’s and, if accepted, would knock out the sales ban even for older-pattern pistols that lack Glock’s newer blocking features.
The Constitutional Stakes
Both cases will be decided against the post-Bruen framework. Courts now ask whether the regulated conduct falls within the Second Amendment’s plain text and, if so, whether the government can identify a historical analogue for the restriction. Handguns used for self-defense sit at the center of Heller. Connecticut will argue that it is not banning handguns as a class, only a subset defined by a conversion risk, and that public-safety regulation of unusually dangerous configurations has historical support.
Plaintiffs will answer that the pistols at issue are among the most common defensive firearms in the country, that conversion devices are already banned, and that a state may not collapse the distinction between a lawful arm and an illegal modification. They will also press the vagueness and speech claims, which do not require the court to reach the Second Amendment if the statute cannot be understood or if it criminalizes truthful commercial speech.
The state’s defense will be handled in the first instance by Attorney General Tong’s office. Tong has won other recent Second Amendment cases in the District of Connecticut, including a July 2026 ruling upholding most of the state’s handgun restrictions for 18- to 20-year-olds. That history will not decide these cases, but it signals that Connecticut intends to litigate rather than settle.
A National Pattern, Not a One-State Dispute
Connecticut is not acting alone. California enacted a comparable “machinegun-convertible pistol” restriction first. Maryland and New York followed in 2026 with closely related language. Gun-rights groups sued in those states as well. The Justice Department’s Civil Rights Division has separately warned California that a categorical Glock-style ban raises constitutional problems. Whatever the District of Connecticut does in Glock v. Griffin and NSSF v. Griffin will be read immediately in those parallel dockets.
The practical question for Connecticut dealers is shorter-term. On October 1, absent a court order, selling a newly made pistol that a prosecutor later calls a convertible pistol becomes a felony. Glock says the state has already admitted it cannot tell dealers which current models qualify. That is why the company asked for a declaration first and a constitutional ruling only if the declaration is refused.
The deeper question is the one NSSF posed: whether a state may take the most popular striker-fired handguns off the commercial market because criminals already break a different law. Courts will now decide whether that theory is a public-safety measure consistent with the Second Amendment, or an attempt to ban a common arm by another name.