Is a licensee required to mark a privately made firearm (PMF) it receives solely to temporarily hold for an individual (e.g., for storage)?

Yes. Except for a firearm received for adjustment or repair that is returned to the person from whom it was received on the same day, any federal firearms licensee (FFL) who takes an unmarked PMF into inventory must mark the PMF in accordance with 27 CFR 478.92(a)(2). 

Last Reviewed July 22, 2022