Lockable pushing-out device (1) for a furniture part guided in a movable manner in or on a piece of furniture, in particular for a drawer or door, having a spring-loaded drive element (5) for moving the movable furniture part out of a closed end position into an open position, wherein the drive element (5), for the purpose of transmitting force to the movable furniture part, is arranged such that it can be displaced in a guide track (8), and wherein the guide track (8) has at least one portion (A, A′) which is designed such that the furniture part can be moved by virtue of the spring-loaded drive element (5) interacting with the guide track (8).