Voluntaryism does not require that one be a pacifist, meaning the complete abandonment of the use of force. It merely requires that one does not initiate force or aggression against an innocent person or his property. In a free society, the first line of defense and lynch-pin of collective security is the personal use of firearms. In other words, voluntaryists are pro-carry, concealed or not (though the former attracts less attention). Exhibit 1, how to defend yourself and your neighbors from an armed robbery:
It’s fairly straightforward. In a free society, more people would carry, and more would-be robbers would be less-willing to chance an encounter with an armed would-be victim. It’s true, more guns mean less crime.