Facebook Prohibited Content Policy:
Ads may not promote firearms, ammunition, paintball guns, bb guns, fireworks, explosives, pepper spray, knives, tasers, or weapons of any kind, including those used for self-defense. Ads may not directly or indirectly link to landing pages where people can purchase any of these products.
Images of weapons are generally acceptable, as long as the weapon is not pointed directly at the person seeing it.
Ads promoting blogs or groups that exist to help connect people whose interests are related to these products are allowed as long as the service does not lead to the sale of any weapons or explosives.
Acceptable: “Gun Exposition Today”
Unacceptable: “Get your ammo here”