The following persons are prohibited from purchasing and owning a firearm in the state of Oklahoma:^[1]

• With exceptions,^[2] it shall be unlawful for any person convicted of any felony in any court of this state or of another state or of the United States to have in his or her possession or under his or her immediate control or in any vehicle which the person is operating, or at the residence where the convicted person resides, any pistol, imitation or homemade pistol, altered air or toy pistol, machine gun, sawed-off shotgun or sawed-off rifle, or any other firearm.
• Any person who has previously been convicted of a nonviolent felony in any court of this state or of another state or the United States, and who has received a complete pardon from the proper authority and has not been convicted of any other felony offense which has not been pardoned, shall have restored the right to possess any firearm or other weapon,^[3] the right to apply for and carry a handgun, concealed or unconcealed, under the provisions of the Oklahoma Self-Defense Act or as otherwise permitted by law, and have the right to perform the duties of a peace officer, gunsmith, and for firearms repair.
• It shall be unlawful for any person serving a term of probation for any felony in any court of this state or of another state or the United States or under the jurisdiction of any alternative court program to have in his or her possession or under his or her immediate control, or at his or her residence, or in any passenger vehicle which the person is operating, any pistol, shotgun or rifle, including any imitation or homemade pistol, altered air or toy pistol, toy shotgun or toy rifle. In contrast, such a person is subject to supervision, probation, parole, or inmate status.
• It shall be unlawful for any person previously adjudicated as a delinquent child or a youthful offender for the commission of an offense, which would have constituted a felony offense if committed by an adult, to have in possession of the person or under the immediate control of the person, or have in any vehicle which he or she is driving, or at the residence of the person, any pistol, imitation or homemade pistol, altered air or toy pistol, machine gun, sawed-off shotgun or sawed-off rifle, or any other dangerous or deadly firearm within 10 years after such adjudication; provided, that nothing in this subsection shall be construed to prohibit the placement of the person in a home with a full-time duly appointed peace officer who is certified by the Council on Law Enforcement Education and Training (CLEET).^[4] 
• It shall be unlawful for any person who is an alien illegally or unlawfully in the United States to have in possession of the person or under the immediate control of the person, or in any vehicle the person is operating, or at the residence where the person resides, any pistol, imitation or homemade pistol, altered air or toy pistol, shotgun, rifle or any other dangerous or deadly firearm; provided, that nothing in this subsection applies to prohibit the transport or detention of the person by law enforcement officers or federal immigration authorities. Any person who violates the provisions of this subsection shall, upon conviction, be guilty of a misdemeanor punishable by a fine of $250.00.
• Any person having been issued a handgun license under the provisions of the Oklahoma Self-Defense Act and who knowingly or intentionally allows a convicted felon or adjudicated delinquent or a youthful offender as prohibited^[3][5][6] to possess or have control of any firearm authorized by the Oklahoma Self-Defense Act shall, upon conviction, be guilty of a felony punishable by a fine not to exceed $5,000.00. In addition, the person shall have the handgun license revoked by the Oklahoma State Bureau of Investigation after a hearing and determination that the person has violated the provisions of this section.