Donald Trump has said his administration is looking into a potential ban on 'bump stocks' in the wake of the shooting in Las Vegas.
Stephen Paddock killed at least 58 people and injured more than 500 others after he opened fire on crowds at a country music festival from his room at the Mandalay Bay Hotel.
It's believed he used a bump stock, an attachment which increases the rate of fire from a semi-automatic rifle, to carry out the attack.
When quizzed by reporters as to whether he would support a ban on the attachment, the US President said he and his administration were looking into it.
The comments from Trump came as support grows in the US Senate for restrictions to US gun laws.
The President has been a vocal supporter of gun rights since the 2016 presidential campaign, during which he received a huge amount of money from the National Rifle Association.