Abstract: Sliding latches are disposed on the mounting plate of an accessory to a base member. The sliding latches are biased towards respective extended positions at which the latches engage undercuts provided in an exterior surface of the base member. The sliding latches are also biased towards their engagement in the undercuts with a force sufficient to maintain such engagement until a predetermined force is applied to either the base member or the accessory, whereupon the sliding latches move toward a retracted position and the accessory separates from the base member. The sliding latches are interconnected by cam members rotatably mounted on the mounting plate, with at least one of the cam members being directly biased toward rotation in a direction which urges the sliding latches toward their respective extended positions.