control laws and he quickly after last friday's terror attacks came out in support. we talked to an auckland rifle club and they came out in support. and the new zealand police association has endorsed this. and the prime minister seems convinced that she has the country's support behind her. >> we as a government feel absolutely confident that the vast majority of new zealanders will support this change. >> reporter: so how do you get people in a country where there are an estimated 1.2 million guns, we don't know how many of those fit into the new banned categories, but how do they hand them over. well, the authorities are urging people to voluntarily is you are render them and they say that there will be a buyback scheme that could cost new zealand anywhere between $70 million and $140 million.