4457 Form Customs - Customs agents that you already owned your firearm (or any other. This form allows you to prove to u.s. Web the cbp officer on duty will give you a blank form 4457 to complete.fill in the name of owner, address of. Web cbp forms 4457 and 4455 are used to provide a convenient means of showing proof of prior possession of a. Web the cbp form 4457 must be presented along with the firearm (s) and any returning unused ammunition to cbp upon.
Web cbp forms 4457 and 4455 are used to provide a convenient means of showing proof of prior possession of a. Web the cbp form 4457 must be presented along with the firearm (s) and any returning unused ammunition to cbp upon. This form allows you to prove to u.s. Web the cbp officer on duty will give you a blank form 4457 to complete.fill in the name of owner, address of. Customs agents that you already owned your firearm (or any other.