A sub-assembly for a medicament delivery device (i), which sub-assembly comprises: a housing, a delivery member cover configured to be received by the housing and configured to move axially relative to the housing, and a cap assembly, which cap assembly comprises: a cap having a tubular body provided with a distal opening, the cap being configured to be mounted to a proximal end of a medicament delivery device, a tubular remover configured to be received in the distal opening of the cap, the remover having flexible radially inwards extending grippers configured to engage with a delivery member shield, and a tubular remover insert configured to be received by the remover and configured to be fixedly attached to the cap to prevent axial displacement of the remover insert relative to the cap, characterized in that the remover is axially displaceable relative to the cap and relative to the remover insert, from a first position in which the grippers are pressed radially outwards by an outer surface of the remover insert, to a second position located distally relative to the first position, in which second position the grippers are arranged distally beyond the outer surface of the remover insert, enabling the grippers to flex radially inwards to allow engagement with a delivery member shield, and wherein the cap assembly is configured to be mounted onto a proximal end of the housing, and wherein the remover is configured to be received by the delivery member cover. a housing, a delivery member cover configured to be received by the housing and configured to move axially relative to the housing, and a cap assembly, which cap assembly comprises: a cap having a tubular body provided with a distal opening, the cap being configured to be mounted to a proximal end of a medicament delivery device, a tubular remover configured to be received in the distal opening of the cap, the remover having flexible radially inwards extending grippers configured to engage with a delivery member shield, and a tubular remover insert configured to be received by the remover and configured to be fixedly attached to the cap to prevent axial displacement of the remover insert relative to the cap, characterized in that the remover is axially displaceable relative to the cap and relative to the remover insert, from a first position in which the grippers are pressed radially outwards by an outer surface of the remover insert, to a second position located distally relative to the first position, in which second position the grippers are arranged distally beyond the outer surface of the remover insert, enabling the grippers to flex radially inwards to allow engagement with a delivery member shield, and wherein the cap assembly is configured to be mounted onto a proximal end of the housing, and wherein the remover is configured to be received by the delivery member cover. a cap having a tubular body provided with a distal opening, the cap being configured to be mounted to a proximal end of a medicament delivery device, a tubular remover configured to be received in the distal opening of the cap, the remover having flexible radially inwards extending grippers configured to engage with a delivery member shield, and a tubular remover insert configured to be received by the remover and configured to be fixedly attached to the cap to prevent axial displacement of the remover insert relative to the cap, characterized in that the remover is axially displaceable relative to the cap and relative to the remover insert, from a first position in which the grippers are pressed radially outwards by an outer surface of the remover insert, to a second position located distally relative to the first position, in which second position the grippers are arranged distally beyond the outer surface of the remover insert, enabling the grippers to flex radially inwards to allow engagement with a delivery member shield, and wherein the cap assembly is configured to be mounted onto a proximal end of the housing, and wherein the remover is configured to be received by the delivery member cover.