Replaces everything after the enacting clause. Amends the Criminal Code of 1961. Provides that a person who commits the offense of unlawful purchase of a firearm is guilty of a Class 1 non-probationable felony if any firearm that is purchased is used to commit an act of domestic violence. Amends the Unified Code of Corrections. Provides that a person who commits such offense is ineligible for period of probation, a term of periodic imprisonment or conditional discharge.