Pepper spray

[Bonnox]

The us border agency uses pepper paintballs so could buy your own, but there must be a way of doing it yourself, an experimentation session is required me thinks

Hypothetically, of course,

How the hell do you get chili sauce inside a paintball pellet?

Hypothetically, of course, since it is all equally illegal,

You could fabricate a zip gun, make the powder and projectiles and be effectively armed before you could get all this chemical technology, that does nothing bur pi$$ the attacker off, in place.