Any person manufacturing firearms for the purpose of sale and distribution must be licensed as a manufacturer. Cerakoting is considered a manufacturing activity.
The final rule amends and states in part that 鈥淟icensed manufacturers may adopt the serial number and other identifying markings previously placed on a firearm by another licensed manufacturer provided the firearm has not been sold, shipped, or otherwise disposed of to a person other than a licensee, and the serial number adopted is not duplicated on any other firearm.鈥 聽
If assembling firearms from a new frames or receivers, the licensed manufacturer must mark the caliber or gauge, if any, on the firearms and, if a model is assigned, mark the model on the firearms. 聽