Medicament delivery device comprising: - a generally elongated tubular housing having opposite proximal and distal parts; - a needle shield sleeve slidably and coaxially arranged inside the housing and wherein a proximal part of said sleeve protrudes a distance outside the proximal part of the housing; - a syringe carrier mechanism comprising a syringe carrier slidably and coaxially arranged within the needle shield sleeve, a syringe comprising a stopper, a medicament and a needle, wherein said syringe is coaxially arranged within said syringe carrier, and a holding member connected to the syringe carrier; - a first activator member slidably and coaxially arranged within the housing and connected to said needle shield sleeve; - a second activator member slidably and coaxially arranged within the first activator member and arranged to come in contact with a distal wall of the distal housing part; - a drive mechanism comprising a compression spring and a plunger rod slidably and coaxially arranged within the second activator member and releasibly connected to the holding member and to the second activator member, wherein said compression spring is pre-tenisoned with a proximal end arranged to said plunger rod and with a distal end arranged to said second activator member and is adapted to accumulate a drive force for moving said syringe carrier mechanism in a first step for penetrating the needle into an injection site and to move said stopper in a second step for expelling the medicament through the needle, and wherein said drive mechanism is controlled by the first and the second activator members; characterized in that said second activator member is arranged with information means arranged to cooperate with corresponding interacting means arranged on the distal part of the elongated tubular housing after the medicament is completely expelled, wherein said second activator member is released such that a remaining drive force of the accumulated drive force in the compression spring forces the second activator member to be displaced towards the distal part of the elongated tubular housing and striking said distal wall of said distal housing part for producing audible, visual and/or tactile feedback to a user about a completed injection. - a generally elongated tubular housing having opposite proximal and distal parts; - a needle shield sleeve slidably and coaxially arranged inside the housing and wherein a proximal part of said sleeve protrudes a distance outside the proximal part of the housing; - a syringe carrier mechanism comprising a syringe carrier slidably and coaxially arranged within the needle shield sleeve, a syringe comprising a stopper, a medicament and a needle, wherein said syringe is coaxially arranged within said syringe carrier, and a holding member connected to the syringe carrier; - a first activator member slidably and coaxially arranged within the housing and connected to said needle shield sleeve; - a second activator member slidably and coaxially arranged within the first activator member and arranged to come in contact with a distal wall of the distal housing part; - a drive mechanism comprising a compression spring and a plunger rod slidably and coaxially arranged within the second activator member and releasibly connected to the holding member and to the second activator member, wherein said compression spring is pre-tenisoned with a proximal end arranged to said plunger rod and with a distal end arranged to said second activator member and is adapted to accumulate a drive force for moving said syringe carrier mechanism in a first step for penetrating the needle into an injection site and to move said stopper in a second step for expelling the medicament through the needle, and wherein said drive mechanism is controlled by the first and the second activator members; characterized in that said second activator member is arranged with information means arranged to cooperate with corresponding interacting means arranged on the distal part of the elongated tubular housing after the medicament is completely expelled, wherein said second activator member is released such that a remaining drive force of the accumulated drive force in the compression spring forces the second activator member to be displaced towards the distal part of the elongated tubular housing and striking said distal wall of said distal housing part for producing audible, visual and/or tactile feedback to a user about a completed injection.