Spokesman says policy is a response to a string of incidents in recent years
A hardline law and order policy by NZ First would offer greater protection to homeowners, farmers and shop keepers who shoot to kill intruders during home invasions or burglaries.
Along with a 40-year mandatory non-parole sentence for premeditated murder, NZ First wants the Crimes Act amended to give certainty over the use of "reasonable force" for self-defence.
Ahead of the party's annual convention this weekend, law and order spokesman Richard Prosser said the policy was a response to a string of incidents that had seen farmers and shopkeepers in court over their use of firearms or even hockey sticks against would-be robbers.
Mr Prosser said so-called "castle doctrine" laws in some US states, which saw Texan Joe Horn acquitted after his 2007 fatal shooting of two men who had burgled his neighbour's home, were "so over the top that it wouldn't be something that I think anyone in New Zealand would give consideration to".