The Las Vegas shooter used of the devices to kill 58 people last October
US President Donald Trump has signed a memorandum recommending the banning of ‘bump stock’ gun modification devices - such as those used in the Las Vegas shooting.
President Trump has said he signed a memo directing the Justice Department to propose regulations to "ban all devices" that perform similar actions.
A bump stock helps turn a semi-automatic weapon into an automatic weapon.
It replaces the rifle's standard stock, allowing the weapon to move back and forth more rapidly.
The US President made the announcement during a ceremony recognising the bravery of America's public safety officers, including some of those who responded to the mass shooting in Florida.
He said the new regulations would be finalised "very soon."
The National Rifle Association (NRA) has previously backed further regulation on bump stocks.