Which license (FFL) type do I need for Cerakote?
There are several different FFL types and which one you apply for will be directly dependent upon what work you're doing.
In this video I cover some of the differences between a manufacturing license (FFL07) and a dealer's license (FFL01).
Cerakote is a process of adding an aesthetic that also increases the durability of the firearm. There are a lot of nuances to that work and you have to know what license is necessary so you don't end up in trouble.