Glock Inc. filed a federal lawsuit Monday against Connecticut Chief State's Attorney Patrick J. Griffin and other state officials, challenging a new law that bans the sale of certain semiautomatic pistols effective October 1.

The complaint, filed in U.S. District Court for the District of Connecticut, seeks declaratory and injunctive relief. Glock argues that the statute's definition of "convertible pistols" is vague and that its Slimline, V Series, and Gen6 models do not qualify under the law.

The measure, signed by Gov. Ned Lamont in June as Public Act 26-41, prohibits the importation, advertisement, and sale of semiautomatic handguns with a cruciform trigger bar that can be readily altered by hand or common tools to accept a pistol converter, often called a Glock switch. Violations carry penalties of up to five years in prison and a $5,000 fine.

Glock maintains that state officials have provided no clear guidance on whether its redesigned pistols fall under the ban despite company requests for clarification. The suit also asserts that the law unconstitutionally burdens the Second Amendment rights of law-abiding citizens by restricting access to widely used handguns.

A separate lawsuit filed the same day by the National Shooting Sports Foundation and other plaintiffs makes broader constitutional arguments against the measure.

The law targets conversion devices already illegal under federal law. Glock notes that its pistols are used by Connecticut state troopers and that hundreds of thousands of similar handguns are manufactured annually in the United States.