I should have mentioned it is an Armalite. Here is part of our import laws, The Police permit to import is not a problem it's getting someone to export an ITAR item
Firearms and parts of firearms
Importing firearms and parts of firearms into New Zealand is strictly controlled under the Arms Act 1983.
An arms permit to import from the New Zealand Police is needed to import the following:
Firearms including pistols, starting pistols and military style semi-automatic firearms (MSSAs).
Other types of firearms:
Bolt gun or stud gun.
Humane killer.
Tranquiliser gun.
Stock-marking pistol.
Flare pistol.
Deer net gun.
A pistol that is part of a rocket or line throwing equipment.
Miniature cannon.
Any antique firearm.
Starting pistols.
Replica firearms (a replica firearm is an exact working copy of the original firearm and is capable of firing live ammunition).
Some firearm parts.