While federal law does not require a license to possess a firearm, many states have implemented their own rigorous requirements:
: Some states impose a mandatory "cooling off" period (often 3 to 10 days) between the purchase and the physical transfer of the firearm to allow for more thorough background checks. gun buying requirements
: Those convicted of a misdemeanor crime of domestic violence or subject to certain protective orders. 3. State-Level Variations While federal law does not require a license