Canada has banned assault-style weapons one week after the country’s worst-ever mass shooting left 22 people dead — plus the gunman.

Unemployed denture maker Gabriel Wortman was armed with two semi-automatic rifles and several semi-automatic pistols — and one of the guns was a military-style assault weapon, Royal Canadian Mounted Police say, according to the Guardian newspaper.

“These weapons were designed for one purpose and one purpose only: to kill the largest number of people in the shortest amount of time,” said Prime Minister Justin Trudeau.

“There is no use and no place for such weapons in Canada,” he said.

“Effective immediately, it is no longer permitted to buy, sell, transport, import or use military-grade assault weapons in this country.”

Trudeau had pledged last week to push for tighter gun legislation, including a ban on assault-style weapons.

Still, the new ban, had it been in effect before the shooting, would not have done much to stop Wortman, the Guardian noted. Investigators believe he purchased his weapons illegally in Canada and the United States.