Glock sues Connecticut over its vague "convertible pistol" ban

Glock has sued Connecticut officials over a new "convertible pistol" law, saying the state could not tell the company which of its own guns would become felonies to sell. Jared Yanis walks through the complaint and calls it a rare case of a major manufacturer fighting back instead of quietly complying.

The short version

Connecticut's House Bill 5043, now Public Act 26-41, makes it a felony to import, advertise or sell a "convertible pistol" made on or after October 1, 2026: a semi-automatic pistol that can be "readily altered" to accept a machine-gun conversion device. The case, Glock v. Griffin, was filed in the U.S. District Court for the District of Connecticut against the state's chief state's attorney and other officials.

Glock says it redesigned its pistols to block known conversion devices, including a "triple block" system in newer models, and that ATF testing on a Model 19 Gen 6 found the system stopped every device tested. According to the complaint, Glock met with the attorney general's office and state police on August 27th and followed up in writing, but never got an answer on whether its current guns are covered.

Key points

• Timing: The law takes effect October 1, and its ban applies to covered pistols manufactured on or after October 1, 2026.
• ATF test: Glock cites a July 8, 2025 ATF report finding its triple-block design prevented every tested conversion device from installing or working.
• Vagueness claim: Glock argues "readily altered," "readily removed" and "advertises" are too vague to enforce under the 14th Amendment.
• Second Amendment claim: Glock says its pistols are among the most common handguns in America and can't be banned because someone might illegally modify one.
• Product shift: The complaint says Glock stopped selling older-generation standard pistols to civilians on December 1, 2025, moving to V-series and Gen 6 models.

Bottom line

If Glock is right, Connecticut dealers face felony exposure under a law even the state can't explain. Anyone buying or selling Glocks in Connecticut should watch this case, and so should other states considering similar language.

Source: Jared Yanis