OK, looks like there is a need for understanding...
US Customs for 4457 - Certificate of Registration for Personal Effects Taken Abroad
From a US Customs perspective, as its name implies, US CBP Form 4457 has nothing to do with rifles, per se. It serves to document WHEN YOU RETURN TO THE US that your rifle(s) was/were not acquired abroad, and that you do not need to pay import tariff on it/them.
From an African police perspective, where licensing of individual firearms is required, most African police forces interpret the Form 4457 as a US permit / registration of your firearm(s). This is why one is needed to file for a temporary import permit such as SAPS 520 in South Africa or ZIMRA FR 20 in Zimbabwe.
Note that in the upper right corner of the 4457 there is an expiration date. South Africa Police Services (SAPS) require a "non-expired" 4457, which means that you essentially have to renew your 4457 every two years, even if you bring the same rifle(s) several years in a row.
By definition, a US CBP agent MUST verify the serial number of the rifle(s) listed.
SAPS 520 in South Africa or ZIMRA FR 20 in Zimbabwe, etc.
These are temporary import permit and rifle registrations that are only valid for the duration of the hunt. This is why to obtain them a letter of invitation by the outfitter is required, stating dates of arrival and departure.
YOU WILL NOT BE ALLOWED TO LEAVE THE COUNTRY if on departure you do not return the form AND you do not have possession of the rifle(s) listed. This is to prevent illegal importation of firearms that would become unregistered firearms, such as a client gifting a firearms to a PH.
It is possible to gift a firearms to a PH but the amount of paperwork required (import license, transfer permit, registration, etc.) is daunting to the point that it is all but practically impossible, especially in a matter of days at the end of a safari.
I hope this helps understanding what is what
As to process...
The $150 you will spend to get a SAPS 520 filed ahead of time and pre-approved, AND a VIP welcome at international arrivals where a local will handle everything for you, is indeed likely one of the best $150 you can spend on the entire safari. Folks at Rifle Permits (
http://riflepermits.com/), Afton Safari Lodge (
https://www.aftonsafarilodge.com/permits/) etc. will be happy to handle this for you. All you need to do is stand back and smile. Entering into a debate with SAPS at the airport is one of the best way I can imagine to transform an easy formality into a terminal stress test...
Because it is highly advisable to get a pre-approved SAPS 520, it follows that a form 4457 must be obtained prior to applying for the SAPS 520. As emphasized by other AM members, it is wise to get the 4457 and apply for the SAPS 520 at least several weeks, or preferable 2 months, in advance.
A complete file for a pre-approved SAPS 520 (South Africa) includes:
- Completed SAP 520 Form (signed in 2 places on page 6)
- Color copy of Passport pages 2 & 3
- Complete Flight Itinerary including return flights
- Non expired US Customs Form 4457 signed and stamped by a US CBP agent
- Invitation letter from your Outfitter, including arrival and departure dates.
It is a wise decision to carry with you two spare sets of all the above (one in your rifle case, in case it is inspected in your absence) and one in your luggage.
It is debatable whether notarizing of the copies of passport and 4457 is actually required, but it cannot hurt...