Provided in this disclosure is a interchangeable, multi location, multi cant, auto locking, quick mount structure for a holster, for a firearm, hand held device, carried gear or the like. The interchangeable, multi location, multi cant, auto locking, quick mount includes an insert plate having a generally circular profile and configured for securement to a receptacle (e.g., a holster or magazine pouch) for removably retaining a hand-held device (e.g., a firearm or ammunition magazine. A receiver platform is configured for mounting to an engagement surface (such as a gun belt) for removably receiving the insert plate. An internal track is formed on the receiver platform and has a generally circular profile configured to mate with and retain the generally circular profile of the insert plate. In this manner, rotation of the insert plate is enabled to a selected mounting angle with respect to the receiver platform.