Connecticut Governor Ned Lamont signed legislation Tuesday banning the sale of Glock and Glock-compatible “cloned” handguns, making the state the third in the nation to target the popular firearm manufacturer.

The ban, which takes effect October 1, 2026, follows similar measures in California (effective July 1, 2026) and Maryland (effective January 1, 2027). All three states used language targeting “convertible pistols” or “machinegun-convertible pistols” to justify the restrictions, citing the illegal use of “Glock switches,” small devices that can convert semi-automatic Glocks into full-auto firearms, which are already prohibited under federal law.

Democrats in the three states framed the bans as a response to gun violence linked to the illegal switches. Critics argue the measures primarily punish law-abiding gun owners and manufacturers for the criminal misuse of already-illegal modifications.

Glock pistols are among the most common handguns in the United States, favored by law enforcement, civilians, and firearms enthusiasts for their reliability and simplicity. The growing number of state-level bans is part of a broader push by gun control advocates, including groups like Everytown for Gun Safety, to restrict popular semi-automatic firearms.