WASHINGTON D,C, United States of America
US President Donald Trump has banned a device which allows semi-automatic weapons to fire like machine guns, after they were used in the Las Vegas shooting.
The president signed the decree Tuesday and owners will have until late March to turn them in or destroy them.
The ban will be in force 90 days after it is published in the federal register, which is expected to happen on Friday.
The attachment allows semi-automatic weapons to fire as a machine gun would, and became a focal point of the gun control debate when they were used by Stephen Paddock to open fire on a music festival in Nevada in October last year.
It became the worst mass shooting in US history.