Synopsis As Introduced Amends the Criminal Code of 2012. Provides that any person who, prior to the effective date of the amendatory Act, lawfully possessed an assault weapon shall register the assault weapon with the Illinois State Police within 90 days after the effective date of the amendatory Act and any person who acquired an assault weapon on or after the effective date of the amendatory Act shall register the assault weapon with the Illinois State Police within 90 days after he or she purchased or was given the weapon. Provides that the registration shall contain a description of the assault weapon that identifies it uniquely, including all identification marks, the full name, address, date of birth, and thumbprint of the owner, and any other information that the Director of the Illinois State Police deems appropriate. Provides that the Illinois State Police may charge a fee for registration not to exceed the reasonable processing costs of the Illinois State Police. Provides that the fees shall be deposited into the State Police Firearm Services Fund. Provides that a violation of these provisions is a Class A misdemeanor. Defines various terms.