Needle free syringe and pre-filling system

A method of filling a needle-free syringe comprising:

• providing a syringe body and cap assembly comprising;
• a syringe body comprising a nozzle at a nozzle end, said nozzle defining an opening from the exterior of the syringe body to an interior chamber and a plunger opening at a plunger end of the syringe body, said plunger opening defining a second opening from the exterior of the syringe body to the interior chamber which plunger opening is located opposite the nozzle opening;
• and
• a cap engaged with the syringe body at the nozzle end, the cap comprising an interior surf ace which forms a fluid tight seal with the syringe body at the nozzle opening, and wherein the cap further comprises an exterior surface;
• providing a filling tub system comprising;
• a one piece filling tub comprising a plurality of exterior tub walls and a floor;
• a plurality of lifting bolt holes extending through the floor, wherein each lifting bolt hole provides for a lifting bolt to extend through the floor;
• and
• a plurality of perimeter socket walls extending upward above the floor, wherein each socket wall defines a socket configured to receive and support the cap engaged with the syringe body, wherein each one of the lifting bolt holes extends into a corresponding socket;
• engaging the syringe body and cap assembly with one of the plurality of sockets;
• filling the interior chamber of the syringe body to a select level with an injectable substance, wherein filling occurs through the plunger opening;
• inserting a plunger into the plunger opening of the filled syringe body.