Advice on firearms for CTB

[Iamtired]

I would love to get some advice on firearms:

If two people hypothetically took sleeping pills and found a third to gun them down in their sleep, what gun should they buy to ensure the fastest death?

What type of machine gun would you guys recommend?

Thanks :)

 

[cosmic_traveler]

This sounds unnecessarily complicated. We wish you peace. Be well on your journey.