TTSN (Transferor’s Transaction Serial Number)

When you’re first setting up your account with FFLSafe, you’re going to be asked about whether you want to use a TTSN for your FFL.

Whether or not to use a TTSN is a significant decision – once you start using a TTSN, you need to keep using it.

If you’re unsure whether you want to use a TTSN, we recommend NOT using one.

What is a TTSN?

A TTSN is a Transferor’s Transaction Serial Number.

The TTSN is a custom number (each FFL can use the format of their choosing) to help track Form 4473s upon the disposition of firearms to individuals.

How are TTSNs Used?

ATF regulations require certain Disposition information to be kept in the A&D book. For sales to non-FFL individuals, a Form 4473 must be completed and kept on file for the life of the FFL. 

The standard method of recording disposition information in these cases is to list the complete name and address of the customer in the Disposition column for a particular firearm. The Form 4473 must then be filed along with other 4473s by date.

For manual bound books (paper books or spreadsheets), writing the full name and address takes space in the record and time. Therefore, the ATF allows the use of TTSNs instead.

After a 4473 is completed and the firearm has been transferred, an FFL can create their own unique TTSN and list it on the 4473 in the appropriate spot. Then, that TTSN can be used in the disposition column of the A&D book instead of the full address. 

If a TTSN is used, then 4473s must be kept in TTSN order and not just in order by date.

Pros of TTSNs

Using TTSNs can make it easier and faster when recording disposition information. However, this is only true when an FFL needs to write or type out the information manually.

With FFLSafe, the disposition information is automatically entered for you – this means that TTSNs are not easier when using FFLSafe and therefore TTSNs are no longer as much of a benefit. 

Cons of TTSNs

When using a TTSN, 4473s must be kept in TTSN order. This can cause, and has caused, violations from the ATF during inspections.

For example, if you have 30 transactions in a given day, and you are NOT using TTSNs, then those thirty 4473s can be kept in any order as long as they are all grouped as the same day.

However, if you are using TTSNs and pull out the 20th 4473 of that day for review and accidentally put it back into your files before the 19th 4473 of the day, they are not in TTSN order and that can be a violation. (The same accident would not be a violation if TTSNs are not used).

Also, with every extra step there is more of a chance for a mistake. If you accidentally record the wrong TTSN, that could also be a violation.

Lastly, it can be helpful for FFLs to look at their bound book and see all of the transactions to a particular customer and address. If you do NOT use a TTSN, you can see the customer’s name and address in your A&D book every transaction they’ve made. However, with a TTSN, you can not see addresses without looking up each 4473.

Should You Use a TTSN?

Some FFLs find that TTSNs make it easier to find and locate 4473s from a transaction.

However, we recomend that most FFLs do NOT use TTSNs because the A&D log will show the date and the name which make it easy to find the 4473.

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