Yes, the final rule states:
“Frames or receivers designed before August 24, 2022. Licensed manufacturers and licensed importers may continue to identify the same component of a firearm (other than a PMF) defined as a frame or receiver as it existed before August 24, 2022 with the same information required to be marked by paragraphs (a)(1)(i) and (a)(1)(ii) of this section that were in effect prior to that date, and any rules necessary to ensure such identification shall remain effective for that purpose. Any frame or receiver with a new design manufactured after August 24, 2022 must be marked with the identifying information and within the period prescribed by this section. For purposes of this paragraph, the term “new design” means that the design of the existing frame or receiver has been functionally modified or altered, as distinguished from performing a cosmetic process that adds to or changes the decoration of the frame or receiver ( e.g., painting or engraving), or by adding or replacing stocks, barrels, or accessories to the frame or receiver.”
If a licensed manufacturer or importer is unsure if a new firearm design is considered “the same component of a firearm” as existed before August 24, 2022, then the licensee should request a determination by ATF’s Firearms Ammunition Technology Division (FATD).