Lockable mounting fitting

A vehicle seat system for a vehicle comprising:

• a seat;
• a floor track arranged on a floor or platform of the vehicle;
• and
• a mounting fitting for mounting an object to a surface and releasably locking the object in one or more positions relative to the surface, the mounting fitting comprising:
• an elongate fitting body, wherein the elongate fitting body comprises:
• a first portion configured to be attached to the object, in use;
• and
• a second portion having a locking mechanism configured to releasably lock the mounting fitting relative to the surface, in use,
• wherein the locking mechanism comprises:
• a housing within which is mounted a push-button on a spring, the spring biasing the push-button relative to the housing to extend from an opening in the housing, in an unlocked position, the push-button having one or more legs extending into the housing, the one or more legs configured to extend from the housing, in a locking position, when the push-button is pressed against a force of the spring for engagement, in use, with the surface so as to prevent movement of the mounting fitting relative to the surface,
• the mounting fitting further comprising:
• a quick-release mechanism arranged between the push-button and the housing, wherein the quick-release mechanism is configured to lock the push-button in the locking position and to release the push-button from the locking position by a further application of force to the push-button when push-button is in the locking position,
• wherein the first portion is attached to the seat and the second portion is attached to the floor track,
• wherein a position of the seat relative to the floor track is configured to be releasably locked by the locking mechanism, wherein the quick-release mechanism comprises a ball arranged to travel around a groove in the push-button and a complementary groove in the housing.