Synopsis As Introduced Amends the Criminal Code of 1961. Creates the offense of being an armed habitual criminal. Provides that a person commits the offense of being an armed habitual criminal if he or she receives, sells, possesses, or transfers any firearm after having been convicted a total of 3 or more times of any of the following offenses: first degree murder; aggravated battery; aggravated battery with a firearm; unlawful use of a weapon by a felon; robbery; armed robbery; residential burglary; home invasion; vehicular hijacking; gunrunning; intimidation; armed violence; criminal sexual assault; aggravated criminal sexual assault; predatory criminal sexual assault of a child; aggravated domestic battery; or any violation of the Illinois Controlled Substances Act or the Cannabis Control Act that is punishable as a Class 3 felony or higher. Provides that a violation is a Class X felony. Amends the Unified Code of Corrections. Provides that a prisoner serving a sentence for being an armed habitual criminal shall receive no more than 4.5 days of good conduct credit for each month of his or her sentence of imprisonment. Effective immediately.