STAMFORD — Some city legislators say homemade guns are a recipe for disaster, and if the state and federal governments won’t do anything about them, they will.

Laws have to keep up with technology that allows people to create plastic weapons using 3-D printers, and to build guns from parts they can buy, unregulated, online, said Jeffrey Stella and Rodney Pratt, both District 9 Democrats on the Board of Representatives.

Stella, a retired New York Police Department detective, and Pratt, a bail-enforcement agent — with support from fellow representatives — have proposed an ordinance that would ban 3-D weapons and so-called ghost guns.

They drafted an ordinance based on one that took effect in Bridgeport four months ago, Stella said. It prohibits anyone within city limits from owning, using or selling home-manufactured weapons, which are legal in the state and the country.

“How can it be OK for people to manufacture firearms without serial numbers? As a police officer and a city representative, I took oaths to serve and protect people,” Stella said. “Anybody can make these untraceable guns. I feel that if more towns push to ban them, the people in Hartford will realize this is what the people want.”

Pratt said that, as someone who carries a gun for a living, safety must be the priority.

“This is a good starting point toward more common-sense gun laws,” Pratt said. “We don’t want to sit back and wait for the state.”

Make-your-own gun technology has created “a giant loophole in the system,” said Rep. Eric Moron, D-13, who signed on to the proposed ordinance.

“As it is now, you can’t have a gun shipped to you, but you can have parts shipped to you to make a gun. That’s why it’s a ghost — it doesn’t exist until you assemble it,” Morson said. “If weapons are used in crimes, they need to be traceable so people can be held accountable for their crimes.”

For a few thousand dollars, people can purchase a 3-D printer that applies thin layers of plastic to building almost anything, including gun parts. The guns take plastic bullets, though most can hold only one or two at a time. They aren’t known for accurate fire, but tests have shown that some are powerful enough to penetrate human bone.

The most dangerous aspect of 3-D plastic guns is that they can slip through metal detectors at airports, courthouses and other places that seek to keep weapons out.

Bridgeport lawmakers passed an ordinance after police there took seven ghost guns off the street.

Stamford officers seized one two months ago, Capt. Richard Conklin said. They are more common than 3-D guns, Conklin said.

“The one we seized had an assault-rifle platform.,” he said. “You can buy barrels and frames and other gun parts on the internet. It’s not regulated, and you don’t need any special talent to put a gun together. Even someone with limited mechanical ability can do it.”

People make ghost guns and sell them online without serial numbers, usually for less than the cost of a regular gun.

Conklin said many of the guns officers seize on the street have the serial numbers scratched off — a crime that can be charged against anyone who possesses them. But ghost guns have no numbers to remove.

“These guns can be very reliable if the machining is done correctly,” Conklin said. “Sometimes they’re not accurate but they can put a lot of bullets downfield quickly.”

Laws have to be carefully crafted for consistency if the technology is to be regulated properly, the police captain said.

“Going into the future, we will see more and more problems with ghost guns,” he said. “So some thought has to be given to this.”

Assistant Police Chief James Matheny said Stella contacted him before submitting the proposed ordinance, which the Board of Representatives Public Safety Committee was to take up this week. The meeting had to be canceled because of a snowstorm, and a new date has not been set. Stella chairs the committee and Morson is vice chair.

There is an enforcement hang-up with any city ordinance because criminal charges can be brought only under authority of the state or federal government, Matheny said.

The ordinance as proposed would empower police to seize the weapons and impose a $250 fine per day. The owner would have a chance to request a hearing to appeal the seizure, which would have to take place within 30 days. If a hearing officer finds that the weapon is indeed unlawful, police could destroy it.

“A person can be banned from buying firearms but they still can buy parts and build their own gun and we would never know it,” Matheny said. “With the increased regulatory environment around firearm ownership, we see people getting more creative in how to get their hands on guns.”

Stamford police support the effort of city representatives to tackle the issue, Matheny said.

“We are looking for help from the state and the feds on this, but there is not always a political will to move on these things,” he said. “I think it’s good if people locally take what steps they can to regulate it. Every smart police executive in the country should get behind this.”

acarella@stamfordadvocate.com; 203-964-2296.