http://www.ups.com/content/us/en/resources/prepare/guidelines/firearms.htmlAmmunition cannot be included in packages that contain firearms (including handguns). Ammunition must be shipped in accordance with the UPS Guide for Shipping Ground and Air Hazardous Materials, or the UPS Guide for Shipping International Dangerous Goods.
Small arms ammunition, as defined in 49 C.F.R. § 173.59, will be transported only when packaged and labeled in compliance with 49 C.F.R. § 172 regarding hazardous materials shipments.