FIREARM&VEH&AGG VEH HIJACKING

Amends the Criminal Code of 2012. Enhances the penalties for certain violations of the statutes concerning unlawful use or possession of weapons by felons, aggravated unlawful use of a weapon, unlawful possession of a firearm by a street gang member, vehicular hijacking, and aggravated vehicular hijacking. Amends the Unified Code of Corrections. Provides that a prisoner serving a sentence for unlawful use or possession of a weapon by felons or unlawful possession of a firearm by a street gang member shall receive no more than 4.5 days of sentence credit for each month of his or her sentence of imprisonment. Provides that a prisoner serving a sentence for aggravated unlawful use of a weapon, except for a first offense or a first offense in which the offender is at least 18 years of age and illegally carries or possesses a firearm without being issued a currently valid Firearm Owner's Identification Card, shall receive no more than 4.5 days of sentence credit for each month of his or her sentence of imprisonment. Provides that a person convicted of unlawful use or possession of weapons by felons, or persons in the custody of the Department of Corrections facilities, aggravated unlawful use of a weapon by a person who has been previously convicted of a felony in this State or another jurisdiction, or unlawful possession of a firearm by a street gang member is ineligible for the county impact incarceration program.