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 Serial Number Requirements On A Form 1 Build
substandard  [Team Member]
12/1/2011 3:59:44 PM EST
Customer came in the other day wanting help in filling out a Form 1 to build a silencer. When it came to the serial number he wanted to use just "1" as the number. I told him that in my opinion the Form 1 had a good chance of being kicked back to him requesting a longer serial number. There happened to be another SOT visiting the shop at the time and I asked his opinion, he agreed with me.

The customer didn't want any more delays than necessary, so he decided to go with AB-01.

Is there a specific requirement for serial numbers on Form 1 items? I know that they must be serialed obviously, and that the SN is to be engraved minimum .003" deep and 1/16" tall lettering. I was just wondering if you need so many letters and numbers, or the number must be so many characters in length?

Even if there are no specific requirements would you say it would be likely that an examiner would reject a single character SN? Some examiners seem to have their own personal "pet peeves" that they kick forms over.
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StealthCRF  [Member]
12/1/2011 5:55:23 PM EST
from wikipedia:

A serial number is a unique numberassigned for identificationwhich varies from its successoror predecessorby a fixed discrete integervalue. Common usage has expanded the term to refer to any unique alphanumericidentifier for one of a large set of objects, however not every numerical identifier is a serial number; identifying numbers which are not serial numbers are sometimes called nominal numbers. In data processingand allied fields in computer science, the distinction between serial and nominal numbers is an important one.

Sequence numbers are almost always non-negative, and typically start at zero or one.

substandard  [Team Member]
12/2/2011 7:18:17 AM EST

Originally Posted By StealthCRF:
from wikipedia:

A serial number is a unique numberassigned for identificationwhich varies from its successoror predecessorby a fixed discrete integervalue. Common usage has expanded the term to refer to any unique alphanumericidentifier for one of a large set of objects, however not every numerical identifier is a serial number; identifying numbers which are not serial numbers are sometimes called nominal numbers. In data processingand allied fields in computer science, the distinction between serial and nominal numbers is an important one.

Sequence numbers are almost always non-negative, and typically start at zero or one.



I agree with the definition, but that is Wikipedia.

My question is does the BATFE-NFA have any specific laws or regulations concerning serial numbers on Form 1 NFA items.
Everrest  [Team Member]
12/2/2011 10:41:16 AM EST
I would recommend readin the NFA Handbook.

There is a section on manufacturing
Marking and schemes are discussed in 7.4 (manufacturer related, but should work for an individual)
NFA Handbook Chapter 7

NFA handbook landing page


AB-01 should work.

ETA: He's should also read Chapter 6 Making NFA firearms by non-licensees
substandard  [Team Member]
12/2/2011 12:45:15 PM EST

Originally Posted By Everrest:
I would recommend readin the NFA Handbook.

There is a section on manufacturing
Marking and schemes are discussed in 7.4 (manufacturer related, but should work for an individual)
NFA Handbook Chapter 7

NFA handbook landing page


AB-01 should work.

ETA: He's should also read Chapter 6 Making NFA firearms by non-licensees


Thanks, that told me everything I needed to know.
RenegadeX  [Member]
12/2/2011 1:01:56 PM EST
Never used a single digit but have used a single Alpha + Digit - "A1"
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