Resettable auto injector training device with a releasably locking shield and a resetting cap

A resettable injection training device, comprising:

• an outer housing comprising a proximal end and a distal end, the outer shell defining a chamber there within;
• a plunger slidable within the chamber, the plunger comprising a plunger feature;
• a safety shield assembly disposed and slidable within the chamber and comprising a proximal end and a distal end, the safety shield assembly comprising an extended locked position, an extended reset position, and a retracted position;
• a locking sleeve disposed at the proximal end of the locking safety shield assembly, the locking sleeve comprising a plunger interacting ramp and plunger interacting groove for interfacing with the plunger feature;
• an actuation assembly comprising a proximal end and a distal end, the actuation assembly comprising an actuator portion at the proximal end and a plunger locking portion at the distal end;
• and
• an actuation collar disposed at the distal end of the actuation assembly, wherein the actuation collar interacts with the plunger locking portion to hold the plunger in a pre-fired position.