Ads and Sponsored Stories may not contain content that is illegal or otherwise prohibited per Facebook's Advertising Guidelines. Prohibited content includes but is not limited to the examples listed below:
Ads and Sponsored Stories 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 and Sponsored Stories 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 and Sponsored Stories 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.