Long periods of peace and quiet favor certain optical illusions. Among them is the assumption that the invulnerability of the home is founded upon the Constitution and safe-guarded by it. In reality, it rests upon the father of the family who, accompanied by his sons, appears with an ax on the threshold of his dwelling. -- Ernst Junger
It seems to me that, in a country where firearms aren't required to be registered (yet), it would be predictable that many firearms owners would decide to go outlaw and refuse to turn them in when told to do so. New Zealand seems to have missed that memo.