There are also no federal regulations against transporting guns across state lines. The United States Senate failed to pass a bill in April 2013 to outlaw gun trafficking, and a sponsor of that legislation, Senator Kirsten E. Gillibrand of New York, said she plans to reintroduce the bill in the next session.

“It’s common sense reform that saves lives,” Ms. Gillibrand, a Democrat, said.

Even without federal support, New York could enact stricter laws on trafficking, the report says, noting the Gun Kingpin bill, introduced in the State Senate this year. The bill would make the illegal sale or possession of more than 20 firearms a higher-level felony.

“This would fill a major gap in our state’s otherwise strong and sensible gun laws,” said Cyrus R. Vance Jr., the Manhattan district attorney, a Democrat who supports the bill.

The attorney general’s report portrays the state as a victim of inadequate gun laws at both the state and federal level.

“The federal government’s inaction on sensible national gun laws, coupled with the lax laws of other states, makes states like New York a target of trafficking,” the report says.

The state has some of the strictest gun control laws in the country, and the regulations in New York City are even stricter. The state requires residents to register handguns and obtain permits to buy and carry handguns. It also requires handgun owners to be licensed. The city extends those restrictions to rifles and shotguns.

The report offers several recommendations to strengthen gun laws at the federal level, including closing a loophole that allows people to buy firearms at gun shows, requiring universal background checks, making gun trafficking a federal crime and loosening federal restrictions on tracing guns. Additionally, the report suggests that states require licenses for all handgun owners.