The country's parliament voted for a ban on a range of semi-automatic weapons, passing the bill into law with 119 votes-to-one at its third and final reading.
"We are ultimately here because 50 people died and they do not have a voice," Prime Minister Jacinda Ardern said in her speech to the house.
The New Zealand government decided to change the country's gun laws in response to the Christchurch mosques deadly terrorist attack that took place on March 15, 2019 and left 50 people dead.
Shortly after the tragedy, on March 21, New Zealand Prime Minister Jacinda Ardern introduced a ban on military-style semi-automatic firearms and assault rifles.
The suspect in the attack, identified as 28-year-old Australian national Brenton Tarrant, was detained and has been since then charged with murder and put into custody.