You may not use PayPal in the purchase or sale of any firearm unless the seller has been expressly approved by PayPal as detailed below. This includes all rifles, shotguns, and handguns, whether for use in sporting, as collectibles, or curio and relic (C&R) firearms, and regardless of their present working order. Furthermore, PayPal defines "firearm" consistent with the U.S. Code and, as such, prohibits frames, receivers, or any other serialized firearm components. For more information, please refer to U.S. Code Title 18, Section 921