An autoinjector comprising: a case adapted to hold a medicament container having a needle; a needle shroud telescopically coupled to the case and movable between a first extended position relative to the case in which the needle is covered, and a retracted position relative to the case in which the needle is exposed, and a second extended position relative to the case in which the needle is covered and the needle shroud cannot translate relative to the case; and a plunger slidably disposed in the case and movable between a proximal position, an intermediate position and a distal position relative to the case, characterized in that, when the plunger is in the intermediate position and the needle shroud is in the retracted position, the plunger abuts the case to prevent the needle shroud from returning to the first extended position, and wherein, when the plunger is in the distal position and the needle shroud is in the second extended position, the plunger abuts the case to prevent the needle shroud from returning to the retracted position, wherein the case includes a second complaint case beam (2.5) having a second boss (2.6) adapted to engage a control structure (7.3) on the needle shroud, wherein the second compliant case beam (2.5) is movable in radial and tangential directions relative to the case, wherein the control structure (7.3) includes a first surface (7.4) adapted to radially abut the second boss (2.6) when the needle shroud is in the first extended position, wherein the control structure (7.3) includes a recess (7.5) proximal of the first surface (7.4) or the second surface (7.5), wherein the recess (7.5) is adapted to receive the second boss (2.6) when the needle shroud is in the retracted position and the second compliant case beam (2.5) deflects radially or tangentially, wherein the plunger abuts the second boss (2.6) when the second boss (2.6) is received in the recess (7.5) and the plunger is in the intermediate position. a case adapted to hold a medicament container having a needle; a needle shroud telescopically coupled to the case and movable between a first extended position relative to the case in which the needle is covered, and a retracted position relative to the case in which the needle is exposed, and a second extended position relative to the case in which the needle is covered and the needle shroud cannot translate relative to the case; and a plunger slidably disposed in the case and movable between a proximal position, an intermediate position and a distal position relative to the case, characterized in that, when the plunger is in the intermediate position and the needle shroud is in the retracted position, the plunger abuts the case to prevent the needle shroud from returning to the first extended position, and wherein, when the plunger is in the distal position and the needle shroud is in the second extended position, the plunger abuts the case to prevent the needle shroud from returning to the retracted position, wherein the case includes a second complaint case beam (2.5) having a second boss (2.6) adapted to engage a control structure (7.3) on the needle shroud, wherein the second compliant case beam (2.5) is movable in radial and tangential directions relative to the case, wherein the control structure (7.3) includes a first surface (7.4) adapted to radially abut the second boss (2.6) when the needle shroud is in the first extended position, wherein the control structure (7.3) includes a recess (7.5) proximal of the first surface (7.4) or the second surface (7.5), wherein the recess (7.5) is adapted to receive the second boss (2.6) when the needle shroud is in the retracted position and the second compliant case beam (2.5) deflects radially or tangentially, wherein the plunger abuts the second boss (2.6) when the second boss (2.6) is received in the recess (7.5) and the plunger is in the intermediate position.