The present disclosure relates to an autoinjector device for use in combination with a syringe, said syringe comprising a movable plunger; a needle; and a tubular needle shield. The claimed autoinjector device comprises: an elongated housing having a proximal and a distal end; a drive mechanism; a syringe holder in order to support the fragile syringe and to prevent damage to the syringe. The invention furthermore relates to a method for assembly of the autoinjector device according to the invention.