A mounting assembly for attaching an accessory to a dovetail rail interface comprising a mount body, a boss formation extending from a side of the mount body, and a clamping assembly received within the boss formation. The clamping assembly including a camming foot and an actuator arm affixed to the camming foot where rotation of the actuator arm causes rotation of the camming foot. The clamping assembly is movable between an engaged position and a disengaged position. The mounting assembly further includes a spring biased latching assembly configured and arranged to selectively retain said clamping assembly in said engaged position.