After a massacre that took 22 lives, Justin Trudeau announced a complete ban on all military-grade weapons in Canada.

Assault-style weapons are banned in Canada effective immediately, the country’s prime minister said Friday.

The move comes less than two weeks after Canada’s deadliest rampage in modern history, when a gunman in Nova Scotia killed 22 people after a 12-hour reign of terror.

“You don’t need an AR-15 to bring down a deer,” Prime Minister Justin Trudeau said at a news conference in Ottawa. “So, effective immediately, it is no longer permitted to buy, sell, transport, import or use military-grade assault weapons in this country.”

Police said the gunman had several semi-automatic handguns and at least two semi-automatic rifles, one of which was described by witnesses as a military-style assault weapon.

“These weapons were designed for one purpose, and one purpose only, to kill the largest number of people in the shortest amount of time. There is no use and no place for such weapons in Canada,” Trudeau said.