Llow profile, positive lock camera component (224) which is lockable to a camera comprising a stationary plate (248) having a central aperture, a lock ring (246) carried by the stationary plate (248) and at least two projections (238-240) coupled to the lock ring (245), wherein rotation of the lock ring (246) rotates the projections (238-240) about a central axis of the component and also advances the projections (238-240) along the axis in direction of the stationary plate (248).
