When did gun registry become mandatory in us?

In the United States, there is no federal law requiring a national gun registry. However, some states have implemented their own gun registration laws at various times. The Gun Control Act of 1968 established federal regulations on firearms, including the requirement for manufacturers and dealers to keep records of firearm sales, but it did not create a national registry of gun owners. Consequently, the specifics of gun registration depend on individual state laws rather than a federal mandate.