It is very basic, it consists of a syringe body, Aluminium barrel (1/4" i.d.), an acetal endplug (press fit), 6mm bolt that goes through the endplug for fueling and venting, and two 4mm counter sink screws for the spark gap.
The barrel and screws are held in place by LIQUID THEN SOLID GOLD (epoxy)

I have shot myself in the stomach several times and in the leg and it leaves a nice welt

Who else has a gun that takes less than 1/2 a cc of butane to fire?
Anyway enough bull@#$!.

Edit: Anyone got a good shape for a stock? I was thinking BullPup style (it's for my 4 year old son)