Oklahoma Unlawful Possession of a Firearm is a criminal offense that occurs when an individual knowingly possesses, manufactures, transports or repairs a firearm without the proper license, permit, or authorization. There are several specific types of unlawful possession of a firearm in Oklahoma including: 1. Possession of a Firearm During the Commission of a Felony: It is illegal for a person to possess a firearm while committing a felony or attempting to commit a felony. 2. Possession of a Firearm by a Convicted Felon: It is illegal for a person with a felony conviction to possess a firearm. 3. Possession of a Firearm by a Person with Mental Illness: It is illegal for a person with a mental illness to possess a firearm. 4. Possession of a Firearm by a Person with Drug Convictions: It is illegal for a person with a drug conviction to possess a firearm. 5. Possession of a Firearm by a Person with Domestic Violence Convictions: It is illegal for a person with a domestic violence conviction to possess a firearm. 6. Possession of a Firearm by a Person under 18 Years of Age: It is illegal for a person under 18 years of age to possess a firearm. 7. Possession of a Firearm with an Obliterated Serial Number: It is illegal to possess a firearm with an obliterated serial number. 8. Possession of a Firearm in a School Zone: It is illegal to possess a firearm in a school zone. The penalties for Unlawful Possession of a Firearm in Oklahoma vary depending on the type of offense and can include fines and prison sentences of up to life in prison.