How much stuff can be missing for it still to be a C&R?

[delisle]

Hmmmm

So if I have an old Enfield that I bought shootable as a .303 and changed it over to a 7.62x39 it is no longer a C&R?

[Mssr. Eleganté]

So when was the ATF given the power to make law?

Government agencies often have the power to make rulings to clarify law. The actual wording of the Gun Control Act passed by Congress instructs "The Secretary" (at the time the Treasury Secretary, but now the Attorney General) to fill in the details of some parts of the Gun Control Act.

Government agencies are required to notify the public when they are proposing rulings or regulation changes so that the public has time to comment or protest before they go into effect. If a ruling is too broad and not supported by the actual wording of the law then you have a chance to try and stop it before it takes effect. After it goes into effect you would need to bring suit against the agency to get the offending rule or regulation thrown out.

[Interloper]

So when was the ATF given the power to make law?

When was the Gov't given the power to make the ATF?