Syringe, auto-injector device and set of auto-injector devices and syringes

A syringe comprising

• a barrel having a distal portion, a proximal portion and an interior defined by side walls to directly hold a medicament, where the proximal portion of the barrel has a finger flange;
• a needle fixed to the distal portion of the barrel;
• a plunger seal slidably positioned within and in direct contact with the side walls of the barrel interior;
• a plunger fixed to the plunger seal where a portion of the plunger extends proximally outside of the barrel interior;
• a first coding feature located on the barrel for mechanical engagement with a second coding feature of an auto-injector device configured to effect penetration of the needle into skin and to then dispense the medicament, where the syringe is configured to operate manually as a stand alone injection device by engaging the finger flange and plunger with fingers on one hand and pushing the plunger distally after needle insertion into skin, and
• wherein the first coding feature is designed such that the syringe is mountable in an auto-injector device having a second coding feature only if the first and second coding features match and where the first coding feature is configured such that the syringe may not be forced into a non-mating auto-injector.