The invention relates to a sheath removal mechanism (15) for removing a protective needle sheath (5) from a medicament container (3),- the medicament container (3) arrangeable in a medicament delivery device (1), wherein- the sheath removal mechanism (15) comprises∘ a cap (11) attachable to a distal end of the medicament delivery device (1), wherein the cap (11) comprises▪ at least one ledge (11.6) adapted to engage the protective needle sheath (5), wherein▪ the ledge (11.6) is arranged on at least one sheath removal beam (11.3) arranged on the cap (11), wherein▪ the sheath removal beam (11.3) extends in a proximal direction (P) from a distal face (11.10) of the cap (11) or is part of an internal sleeve extending in the proximal direction (P) from a distal face of the cap (11),a needle shroud (7) which is adapted to deflect the sheath removal beam (11.3) radially inwards when being moved in the proximal direction (P).
