That is a Fazakerly manufactured action, probably a No4Mk2. Can you show a picture of the "cut-off" block on the right side of the receiver?
A number of them were/are available in New Zealand sans serial numbers (threads on gunboards, milsurps ect) so they should be available here too.
the "cut-off" block on the right side of the receiver?
?? Not sure what you mean....






















































