New Zealand’s gun “buy-back” scheme for prohibited firearms has been facing some problems.Following the Christchurch mosque shootings where 51 individuals were killed by an Australian man using semi-automatic rifles and shotguns on March 15, 2019, New Zealand Prime Minister Jacinda Ardern amended the country’s gun laws in April to ban most military-style semi-automatics, magazines that hold more than five rounds of ammunition, and gun parts, such as special sights and silencers.In June 2019, Prime Minister Ardern set aside more than $208 million New Zealand dollars to compensate owners, for up to 95 percent of the original cost, of newly...