What form is used for personnel who use firearms on a temporary basis?

The correct form used for personnel who use firearms on a temporary basis is the AF Form 1297. This form is specifically designed to document the temporary issue of weapons and ensure proper accountability for firearms. It serves to track the authorization and handling of weapons assigned to individuals who may not be permanent members of a unit or who require firearms for specific, limited-duration operations.

In contrast, the other forms listed serve different purposes within military operations. AF Form 629 is associated with weapons inventory records, AF Form 705 pertains to fitness assessments, and AF Form 1088 is used for personnel actions concerning the assignment of individuals to various duties. Therefore, AF Form 1297 is the most appropriate choice for the situation described in the question.