Some New Zealand gun owners are voluntarily surrendering their firearms after 50 people were killed in a mass shooting there last week — while the country’s government is plowing forward with gun reform, Prime Minister Jacinda Ardern said Monday.

“You can surrender your gun to the police at any time. In fact, I’ve seen reports that people are already doing this,” Ardern told reporters.

Several Kiwis have taken to Twitter to announce they’ve given up their weapons after a gunman opened fire on two mosques in Christchurch on Friday.

“Since I first heard about the atrocity on Friday afternoon I have reflected and reserved my thoughts,” tweeted user @SirWB alongside a photo of a New Zealand police “arms surrender form.”

“Monday morning – this is one of the easiest decisions I have ever made. Have owned a firearm for 31 years.”

Ardern met with cabinet ministers Monday and said they were “completely unified” in moving forward with reforming the country’s laws.

She was expected to announce specific proposals after last week promising reforms within a day of the terror attack — but emerged from the meeting saying only that the cabinet had made several “in principle decisions,” the Guardian reports.

She vowed to announce the reforms “within 10 days of this horrific act of terrorism,” noting that neighboring Australia “took 12 days to make a decision” on gun reform after a mass shooting there in 1996.

“These aren’t simple areas of law. So that’s simply what we’ll be taking the time to get right,” she added.

Ardern’s government is a coalition between her Labour Party, fellow lefties the Green Party and the conservative New Zealand First party.

New Zealand First has not supported previous gun reform attempts, but its leader, Deputy Prime Minister Winston Peters, said Monday, “Our world changed forever and so will some of our laws,” the Guardian reports.

Alleged white supremacist gunman Brenton Tarrant purchased the five guns he used in the massacre legally, according to Ardern.

On Monday, New Zealand’s largest online auction site, TradeMe, banned the sale of semi-automatics and “associated” accessories.

“We’ve had a lot of contact from Kiwis over the weekend about this issue, and many felt that we should stop the sale of these items in the wake of this attack,” said TradeMe CEO Jon Macdonald.

“We’ve listened to these sentiments and we’ve put this ban in place while we await clear direction from the government.”