Voluntary:
The Machinery of Freedom is a classic anarcho-capitalist book by David Friedman, Milton's son.
Me:
Anarcho-capitalism is an oxymoron as far as I’m concerned. It seems to me to be a means of turning the country over to the corporations. We have enough of that now. This idea of hired guns is especially repugnant to me. I’m not too concerned with theory. I’m concerned with who has the guns. Since an individual can’t very well use squad level weapons or company level weapons, you need a militia. That is, if you aren’t getting into really exotic Anarchies. Everybody has to be in the militia, or else the militia is in charge.
As for police, the only way you could have police is by having people be given that function either out of duty or for pay. However they wouldn’t have any special powers or authority, they would have only the hierarchy of ability. For them to be armed, everyone else would have to be disarmed. Yes, they could carry weapons as long as anyone else could as well.
They might be needed for specialized work, such as investigation. As for public safety, that is the charge of the citizen.
Finally, it seems to me that today, capitalism depends on contract slavery. Obviously, there is no place for that in Anarchism.
“Make everything as simple as possible, but not simpler”, A. Einstein
“As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality.” A. Einstein.