Which of the following is a requirement for carrying a concealed firearm if you are a licensed private investigator in Oklahoma?

To carry a concealed firearm as a licensed private investigator in Oklahoma, one must possess a valid investigator license that includes a firearms endorsement. This requirement ensures that individuals carrying concealed weapons have undergone the necessary training and have met specific standards set by the state. The firearms endorsement demonstrates that the investigator has the knowledge and proficiency to handle a firearm safely and responsibly in the course of their investigative work.

Other options do not meet the criteria set forth for private investigators. A permanent firearm display license is not applicable in this context; it is unrelated to the requirements for carrying concealed firearms. Registration with state police may not be a necessity for private investigators to carry concealed weapons, and while a background check certification could be part of the overall licensing process, it is not the specific requirement for carrying a concealed firearm as stated in the question. Thus, the emphasis on a valid investigator license with a firearms endorsement directly addresses the legal framework established for private investigators in Oklahoma wishing to carry concealed firearms.