A handful of people at the packed legislative hearing then shouted about their Second Amendment rights when Heslin asked if anyone could provide a reason for a civilian to own an assault-style weapon.
"We're all entitled to our own opinions, and I respect their opinions and their thoughts," Heslin said. "But I wish they'd respect mine and give it a little bit of thought."
The hearing by a legislative subcommittee reviewing gun laws offered the first public testimony by family members of those killed at Sandy Hook Elementary, where a gunman slaughtered 20 first-grade children and six women. Adam Lanza had killed his mother in their home and then drove to the school to carry out the shooting before committing suicide.
Members of the Connecticut State Police firearms training unit brought weapons to the hearing to provide state lawmakers with a short tutorial on what's legal and illegal under the state's current assault-weapons ban, passed in 1993. The group included an AR-15, the same type of rifle that was used in the Sandy Hook shooting.
Many gun-rights advocates, wearing yellow stickers that read: "Another Responsible Gun Owner," were among the estimated 2,000 people at the hearing. Metal detectors were installed at the entrance to the Legislative Office Building, and some people waited as long as two hours to get into the building in Hartford.
Many spoke about the need to protect their rights and their families' safety.
"The Second Amendment does not protect our right to hunt deer," said Andrew Hesse of Middletown. "It protects our right to self-preservation and preservation of our family. The right to bear arms."