Ah, yes Granty, but Canadianicon No7's or Britishicon/RAF No7's, that is the question as Shakespeare once said............

As for the British bolt head parts - apart from the actual bolt head itself, all you need is a pillar drill, a vice, some decent quality spring steel and a few bits of the right diameter tough steel for the striker. I almost forgot, a hacksaw and a set of good quality files. A small lathe would be useful. My guess would be that it'd take a couple of hours to make a set. Another hour to anneal - harden - temper whatever needed doing, break a couple of bits until you got it right then you're on your way......

When the firing pin on my No7 came apart at the anvil, I just set about making another