Elizabeth Warren told a New Hampshire campaign crowd on Monday that the federal government should ban 'bump stocks,' a device the Trump administration outlawed in March.

Bump stocks turn single-fire semiautomatic rifles into rapid-fire weapons by using the energy from a gun's recoil to fire it repeatedly.

Speaking in Hampton Falls, New Hampshire, the Massachusetts Democratic senator listed three specific objectives when a voter asked what she would do as president to 'get the gun situation under control.'

'Universal background checks,' she said. '[Get] assault weapons off our streets. Get rid of bump stocks and the ability to fire weapons in a short period of time. There are a lot of things we could be doing.'

A federal ban on bump stocks went into effect March 26. The Bureau of Alcohol, Tobacco, Firearms and Explosives broadened the definition of 'machinegun' to include them, because they 'allow a shooter of a semiautomatic firearm to initiate a continuous firing cycle with a single pull of the trigger.'

The Warren campaign did not respond to an emailed request for comment.

Senator and Democratic presidential candidate Elizabeth Warren said Monday in Hampton Falls, New Hampshire that the U.S. should ban 'bump stocks,' a move that the Trump administration made unilaterally in March

Bump stocks attach to semi-automatic rifles to increase the firing rate by harnessing the recoil energy of the weapons themselves

A bump stock allows a shooter to make an ordinary rifle fire at a rapid rate like a fully automatic machinegun, by depressing the trigger with a finger and allowing the gun's recoil to do the work

President Trump moved to ban bump stocks after Republican lawmakers in both houses of Congress were reluctant to tackle gun control during the 2018 midterm election year

President Trump began opining on the issue weeks after a gunman killed 58 people and wounded 422 others during an October 2017 music festival in Las Vegas.

Stephen Paddock fired more than 1,000 rounds of ammunition out of his 32nd-floor hotel room window in the space of about 10 minutes, aided by 14 separate rifles fitted with bump stocks.

The Las Vegas mass-shooting was the deadliest in U.S. history.

By March 2018 Trump found a political reason to become fully engaged on the issue. '[The] Obama Administration legalized bump stocks. BAD IDEA,' he tweeted.

'As I promised, today the Department of Justice will issue the rule banning BUMP STOCKS with a mandated comment period. We will BAN all devices that turn legal weapons into illegal machine guns.'

The administration moved to ban bump stocks unilaterally after Republican lawmakers in both houses of Congress were reluctant to tackle gun control during a midterm election year.

Warren likens gun violence to the 'carnage' on America's roads a few generations ago, before seat belts, airbags and safety glass cut driving fatalities by 80 per cent – the result, she says, of societal goal-setting

Sen. Kirsten Gillibrand also demanded an end to bump stocks during a June 2 Fox News Channel town hall event, apparently unaware that it had been done already

ATF issued its final regulation in December 2018 after a lengthy public comment period that attracted more than 35,000 separate opinions. It took effect 90 days later.

United States Chief Justice John Roberts declined two requests from gun rights groups to temporarily keep the government from enforcing the ban.

The Obama administration's ATF declared in 2010 that bump stocks were beyond its authority to regulate.

The Trump administration's regulation required owners of the devices to either destroy them or surrender them to the government. ATF estimates that hundreds of thousands of them have been sold in the U.S.

The largest manufacturer, Slide Fire Solutions, announced in April that it would stop taking orders and shut down its website.

Police in Odessa, Texas surrounded the scene of a fatal mass-shooting on August 31; the event has brought gun control back to newspaper headlines and political stump speeches

Warren isn't the only presidential candidate to put a bump-stock ban on a political wish list despite the Justice Department already checking it off.

New York Sen. Kirsten Gillibrand told a town hall audience in June that as president she would 'make sure we ban the bump stocks, the large magazines, the assault rifles, the military-style weapons.'

Seth Ator, 36, has been identified as the shooter who killed seven people in Odessa, Texas; he was previously denied a gun purchase because of a standard federal background check

Gillibrand withdrew from the White House race last week.

Warren on Monday framed gun-policy failures as the product of 'corruption' in the form of interference from the National Rifle Association and other gun lobby groups.

But 'the overwhelming majority of Americans want to see us take sensible gun safety regulations. They want to see us change the laws. And that's true, by the way, the majority of gun owners want to see us change the laws, right? Come on!' she said.

Warren also described gun violence as a 'public health emergency,' comparing it to 'carnage' wrought by ordinary automobile travel a few generations ago.

'Back in 1965, there were five deaths for every million miles traveled in America. ... We decided we were going to reduce deaths from driving, and we did,' she recalled, describing the advent of seat belts, safety glass, airbags and automatic braking systems.

Warren, 70, said the United States should embrace the goal of reducing firearms deaths by 80 per cent, including suicides, domestic violence and mass-shootings.

She is polling in third place among the 20 Democrats who are running for president, averaging 16.5 per cent in the polls, according to Real Clear Politics.

A lone gunman opened fire on a country music festival on October 2, 2017 in Las Vegas, Nevada, spraying people with 1,000 rounds of ammunition in about 10 minutes; the gunman, identified as Stephen Paddock, had 14 rifles in the room equipped with rapid-fire bump stocks

Trump told reporters on Sunday that stricter background checks for gun buyers in the United States would not have prevented the weekend mass-shooting in west Texas, casting the recurring massacres as the product of mental illness.

'For the most part, sadly, if you look at the last four or five, or going back even five or six or seven years, for the most part, as strong as you make your background checks, they would not have stopped any of it,' he said of the carnage.

A gunman killed seven people and injured at least 19, including three police officers, in Odessa, Texas on August 31.

Seth Ator, 36, was previously denied a gun after he failed a background check, but later legally obtained the rifle he used to mow down his victims after police pulled him over for a routine traffic stop..