Amends the Illinois Police Training Act. Defines "retired law enforcement officer qualified under federal law" for purposes of the Act to permit the carrying of a concealed weapon. Amends the Criminal Code of 2012, the Unified Code of Corrections, and the County Jail Act. Permits currently employed and qualified retired State correctional officers and county correctional officers to carry their own firearms off-duty without being in violation of the unlawful use of weapons and aggravated unlawful use of weapons statutes if they meet certain training requirements. Provides that currently employed and qualified retired State correctional officers and county correctional officers shall carry a photographic identification and a valid annual firearm certificate while carrying their own firearms off-duty. Limited to correctional officers who have custody and control over inmates in an adult correctional facility. Repeals inconsistent provisions in Public Act 102-779. Effective immediately.