Electric Ignition Of Gun Powder:

 Both Percussion Caps and Primers for cartridges are 'hi-tech' manufactured items that can be "controlled" by any authority seeking to limit access  / availability.

Even presuming good will from good government ... A nation such as New Zealand that chooses NOT to manufacture many modern items, will need to pay the raised price for IMPORTING - wharehousing and marketing ..

A notorious political assassination in Japan serves to illustrate than even in a repressed land - a determined killer managed to make his own gun and propellants .. plus an electronic ignition system .. link:

https://www.youtube.com/watch?v=F3EBWJfGlyc

I understand the ignition system there involved using battery voltage to make steel-wool incandesce.

 

9 Volt Battery Gives Around 700 c To Steel Wool:

There have been a variety of electronic ignition fired arms invented commercially over the years but there are issues of dependability.

Metal Storm's ELECTRONIC IGNITION Gives A MILLION ROUNDS PER MINUTE.

Using 'Superimposed' Rounds.

- This video shows an exploration of possible home assembled e-tech igniters for propellants ..

https://www.google.com/search?q=Firearms+Electronic+ignition&rlz=1C1ONGR_enNZ933NZ933&oq=Firearms+Electronic+ignition&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIICAEQABgWGB4yCggCEAAYhgMYigUyCggDEAAYhgMYigXSAQoyNzQyOGowajE1qAIAsAIA&sourceid=chrome&ie=UTF-8#kpvalbx=_8PcxZaPqLKHw4-EPwfaMUA_8

My current thoughts are that a fully 'HOME-MADE' repeat-use unit constructed from domestic resources might be assembled using "ferro-rods" or even parts from Bic lighters in a flintlock - wheel-lock type heat machine.

Marty K.