New Zealand, which is estimated to have 1.5 million firearms in the country, last updated its guns laws more than 25 years ago, following the country’s last major mass shooting.

The shooting, which was conducted by a man with two military-style semi-automatic rifles and killed 13 people, caused the country to adopt an amendment to its gun laws in 1992 that regulated military-style semi-automatic firearms. The weapons now require a special permit registered with police.