Form 1 or Form 4??

[JG007]

Don't need to engrave?

[BigWaylon]

Sweet. So if I am only the maker I don't need to engrave then.

I'll admit I'm not around here enough to know if you're joking or not. In case you're not, or anybody else has the same question...I'll add this:

§ 479.102 How must firearms be identified?
(a) You, as a manufacturer, importer, or maker of a firearm, must legibly identify the firearm as follows:
(1) By engraving, casting, stamping (impressing), or otherwise conspicuously placing or causing to be engraved, cast, stamped (impressed) or placed on the frame or receiver thereof an individual serial number. The serial number must be placed in a manner not susceptible of being readily obliterated, altered, or removed, and must not duplicate any serial number placed by you on any other firearm. For firearms manufactured, imported, or made on and after January 30, 2002, the engraving, casting, or stamping (impressing) of the serial number must be to a minimum depth of .003 inch and in a print size no smaller than 1/16 inch; and
(2) By engraving, casting, stamping (impressing), or otherwise conspicuously placing or causing to be engraved, cast, stamped (impressed), or placed on the frame, receiver, or barrel thereof certain additional information. This information must be placed in a manner not susceptible of being readily obliterated, altered or removed. For firearms manufactured, imported, or made on and after January 30, 2002, the engraving, casting, or stamping (impressing) of this information must be to a minimum depth of .003 inch. The additional information includes:
(i) The model, if such designation has been made;
(ii) The caliber or gauge;
(iii) Your name (or recognized abbreviation) and also, when applicable, the name of the foreign manufacturer or maker;
(iv) In the case of a domestically made firearm, the city and State (or recognized abbreviation thereof) where you as the manufacturer maintain your place of business, or where you, as the maker, made the firearm; and
(v) In the case of an imported firearm, the name of the country in which it was manufactured and the city and State (or recognized abbreviation thereof) where you as the importer maintain your place of business. For additional requirements relating to imported firearms, see Customs regulations at 19 CFR part 134.
(b) The depth of all markings required by this section will be measured from the flat surface of the metal and not the peaks or ridges. The height of serial numbers required by paragraph (a)(1) of this section will be measured as the distance between the latitudinal ends of the character impression bottoms (bases).

Important to note that the Serial Number is the only item with a minimum height of 1/16". Everything else simply has the minimum .003" depth requirement. Also that the location is where you actually made the firearm, which isn't necessarily your home or work address.

Also...ATF ruled you can use all the prior serial number, caliber and model number engravings here, as long as you add your name and location. An excerpt:

Held, pursuant to 27 CFR 478.92(a)(4)(i) and 479.102(c), ATF authorizes licensed manufacturers and licensed importers of firearms, and makers, to adopt the serial number, caliber/gauge, and/or model already identified on a firearm without seeking a marking variance, provided all of the following conditions are met:
1. The manufacturer, importer, or maker must legibly and conspicuously place on the frame, receiver, barrel, or pistol slide (if applicable) his/her own name (or recognized abbreviation) and location (city and State, or recognized abbreviation of the State) as specified under his/her Federal firearms license (if a licensee);
2. The serial number adopted must have been marked in accordance with 27 CFR 478.92 and 479.102, including that it must not duplicate any serial number adopted or placed by the manufacturer, importer, or maker on any other firearm;
3. The manufacturer, importer, or maker must not remove, obliterate, or alter the importer’s or manufacturer’s serial number to be adopted, except that, within 15 days of the date of release from Customs custody, a licensed importer must add letters, numbers, or a hyphen (as described in paragraph 4) to a foreign manufacturer’s serial number if the importer receives two or more firearms with the same serial number;
4. The serial number adopted must be comprised of only a combination of Roman letters and Arabic numerals, or solely Arabic numerals, and can include a hyphen, that were conspicuously placed on the firearm; and
5. If the caliber or gauge was not identified or designated (e.g., marked “multi”) on the firearm, the manufacturer, importer, or maker must legibly and conspicuously mark the frame, receiver, barrel, or pistol slide (if applicable) with the actual caliber/gauge once the caliber or gauge is known.