The laws governing the legal use, storage and carrying of firearms are constantly changing. Below are the applicable laws in the State of Oklahoma  as of 3/28/2013. The below information is designed to be a guide and not the final word. If you have specific questions, please refer to the Oklahoma Self-Defense Act. Another great resource is the Oklahoma State Bureau of Investigations.

TITLE 21 § 1289.7 FIREARMS IN VEHICLES
Any person, except a convicted felon, may transport in a motor vehicle a rifle, shotgun or pistol, open and unloaded, at any time. For purposes of this section “open” means the firearm is transported in plain view, in a case designed for carrying firearms, which case is wholly or partially visible, in a gun rack mounted in the vehicle, in an exterior locked compartment or a trunk of a vehicle. Any person, except a convicted felon, may transport in a motor vehicle a rifle or shotgun concealed behind a seat of the vehicle or within the interior of the vehicle provided the rifle or shotgun is not clip, magazine or chamber loaded. Theauthority to transport a clip or magazine loaded rifle or shotgun shall be pursuant to Section 1289.13 of this title.Any person who is the operator of a vehicle or is a passenger in any vehicle wherein another person who is licensed pursuant to the Oklahoma Self-Defense Act to carry a handgun, concealed or unconcealed, and is carrying a handgun or has the handgun in such vehicle, shall not be deemed in violation of the provisions of this section provided the licensee is in or near the vehicle.

TITLE 21 § 1289.7a TRANSPORTING OR STORING FIREARMS IN LOCKED MOTOR VEHICLE ON PRIVATE PREMISES – PROHIBITION PROSCRIBED – LIABILITY ENFORCEMENT
A. No person, property owner, tenant, employer, or business entity shall maintain, establish, or enforce any policy or rule that has the effect of prohibiting any person, except a convicted felon, from transporting and storing firearms or ammunition in a locked motor vehicle, or from transporting and storing firearms or ammunition locked in or locked to a motor vehicle on any property set aside for any motor vehicle.

B. No person, property owner, tenant, employer, or business entity shall be liable in any civil action for occurrences which result from the storing of firearms or ammunition in a locked motor vehicle on any property set aside for any motor vehicle, unless the person, property owner, tenant, employer, or owner of the business entity commits a criminal act involving the use of the firearms or ammunition. The provisions of this subsection shall not apply to claims pursuant to the Workers’ Compensation Act.

C. An individual may bring a civil action to enforce this section. If a plaintiff prevails in a civil action related to the personnel manual against a person, property owner, tenant, employer or business for a violation of this section, the court shall award actual damages, enjoin further violations of this section, and award court costs and attorney fees to the prevailing plaintiff.

D. As used in this section, “motor vehicle” means any automobile, truck, minivan, sports utility vehicle, motorcycle, motor scooter, and any other vehicle required to be registered under the Oklahoma Vehicle License and Registration Act.