A medicament delivery device, comprising: a body, a container carrier for retaining a medicament container within the body, the container carrier slidably disposed in the body, a sleeve slidably coupled to body, and a piston rod coupled to the body and the container carrier, wherein the piston rod and the container carrier provide a feedback as the container carrier moves from a first position to a second position relative to the body,, wherein the piston rod is coupled to the body in a manner preventing relative movement between the piston rod and the body, wherein a spring is arranged between the body and the sleeve biasing the sleeve in a distal direction relative to the body, characterized in that the container carrier comprises one or more radially inwardly biased second legs (7.5) adapted to engage a ratchet toothing (11.3) on the piston rod in such a manner that the container carrier can move in the proximal direction but is prevented from moving in the distal direction relative to the piston rod, further comprising at least one clamp arranged on the container carrier and adapted to proximally abut the medicament container, wherein the body includes a rib (2.2) radially abutting the clamp to maintain the clamp in a first angular position when the container carrier is in the first position, and wherein the clamp deflects radially to a second angular position when the container carrier is in the second position, wherein the clamp is adapted to axially abut the sleeve in the second angular position when the container carrier is in the second position, wherein the sleeve comprises a proximal stop (6.4) and a distal stop (6.5) adapted to abut the medicament container, wherein the container carrier comprises at least one first protrusion (7.3) adapted to distally abut the medicament container. a body, a container carrier for retaining a medicament container within the body, the container carrier slidably disposed in the body, a sleeve slidably coupled to body, and a piston rod coupled to the body and the container carrier, wherein the piston rod and the container carrier provide a feedback as the container carrier moves from a first position to a second position relative to the body,, wherein the piston rod is coupled to the body in a manner preventing relative movement between the piston rod and the body, wherein a spring is arranged between the body and the sleeve biasing the sleeve in a distal direction relative to the body, characterized in that the container carrier comprises one or more radially inwardly biased second legs (7.5) adapted to engage a ratchet toothing (11.3) on the piston rod in such a manner that the container carrier can move in the proximal direction but is prevented from moving in the distal direction relative to the piston rod, further comprising at least one clamp arranged on the container carrier and adapted to proximally abut the medicament container, wherein the body includes a rib (2.2) radially abutting the clamp to maintain the clamp in a first angular position when the container carrier is in the first position, and wherein the clamp deflects radially to a second angular position when the container carrier is in the second position, wherein the clamp is adapted to axially abut the sleeve in the second angular position when the container carrier is in the second position, wherein the sleeve comprises a proximal stop (6.4) and a distal stop (6.5) adapted to abut the medicament container, wherein the container carrier comprises at least one first protrusion (7.3) adapted to distally abut the medicament container.