Releaseably locking resettable injection training device

A resettable injection training device comprising:

• an outer housing comprising a proximal end and a distal end, said proximal end comprising one or more locking tabs;
• an inner housing forming a channel;
• an injection simulation member extending from a distal end of the device;
• a safety shield having a proximal end and a distal end, the safety shield being movable relative to the outer housing between a ready-to-fire position, and a fired position, wherein when the safety shield is in a fired position, the injection simulation member is positioned within the outer housing;
• a plunger slidable relative to the inner housing, the plunger comprising a proximal end and a distal end, and a plunger contact portion at its proximal end;
• and;
• wherein the device is reset by releasing the interface between the plunger contact portion and the safety shield, and movement of either of the outer housing toward the safety shield, or the safety shield toward the outer housing, or both, until the housing locking tabs interface with the proximal end of the safety shield to maintain the device in a reset position.