An assembly which is adjustable in length along a longitudinal axis, wherein the assembly is designed as a gas pressure spring, as a hydraulic damper, as a linear drive or as a spring strut, a. comprising at least one connecting element for the connection of the assembly to a component in such a way that the connection can be subjected to tensile loads and compressive loads, b. the at least one connecting element being plugged onto an axial end section with respect to the longitudinal axis of the assembly, c. the at least one connecting element comprising at least one latching arm, d. the at least one latching arm comprising at least one latching element, e. wherein the end portion comprises at least one mating latching element of complementary shape to the at least one latching element, f. wherein the at least one latching element positively cooperates with the at least one mating latching element along the longitudinal axis in an operating configuration of the assembly, g. wherein the assembly comprises at least one spring element acting along the longitudinal axis, characterised in that h. the at least one latching arm is elastically bendable outwards with respect to the longitudinal axis in a mounting configuration of the connecting element for plugging onto the end section, i. the assembly comprising at least one securing element, j. the securing element being set up to prevent the at least one latching arm of the at least one connecting element from bending outwards with respect to the longitudinal axis in the operating configuration of the assembly k. the spring element biasing the at least one securing element against the connecting element along the longitudinal axis in the operating configuration of the assembly. a. comprising at least one connecting element for the connection of the assembly to a component in such a way that the connection can be subjected to tensile loads and compressive loads, b. the at least one connecting element being plugged onto an axial end section with respect to the longitudinal axis of the assembly, c. the at least one connecting element comprising at least one latching arm, d. the at least one latching arm comprising at least one latching element, e. wherein the end portion comprises at least one mating latching element of complementary shape to the at least one latching element, f. wherein the at least one latching element positively cooperates with the at least one mating latching element along the longitudinal axis in an operating configuration of the assembly, g. wherein the assembly comprises at least one spring element acting along the longitudinal axis, h. the at least one latching arm is elastically bendable outwards with respect to the longitudinal axis in a mounting configuration of the connecting element for plugging onto the end section, i. the assembly comprising at least one securing element, j. the securing element being set up to prevent the at least one latching arm of the at least one connecting element from bending outwards with respect to the longitudinal axis in the operating configuration of the assembly k. the spring element biasing the at least one securing element against the connecting element along the longitudinal axis in the operating configuration of the assembly.