Non-residents can legally purchase long guns in Oklahoma directly from a Federally Licensed Firearms Dealer (FFL).
The sale must comply with the laws of both Oklahoma and your home state. If a specific long gun is illegal in your home state (e.g., due to magazine capacity or features), an Oklahoma dealer cannot legally sell it to you. buying a gun in oklahoma with out of state license
If you have recently moved to Oklahoma but still hold an out-of-state license, you may be able to purchase a handgun locally by providing . Non-residents can legally purchase long guns in Oklahoma