RNA - "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, RIA Novosti reported.
The bill must now receive royal assent from the governor general before it becomes law.
The New Zealand government decided to change the country's gun laws in response to the Christchurch mosques deadly terrorist attack that took place in mid-March and left 50 people dead.
Shortly after the tragedy, 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.