What happens if you ship ammo through usps?

Under federal law, it is illegal to ship this type of ammunition, either nationally or internationally, through the U.S. UU. Small arms ammunition poses a significant danger to Correos employees, equipment, and customers, and could be subject to civil penalties and criminal charges if sent through the USPS. For those looking to ship motorcycles, it is important to understand the cost to ship motorcycles and the regulations that apply.