This is what I call the Air Gauge and Air Fill Assembly.
It is all pretty self-explanatory.
The only thing I might add it that you can save a few buck by
using a "T" insted of the 4-way like I did.
Spud Gun Improvements to Pneumatic Gun
Spud Gun Theory of Operation
Spud Gun How Much Does IT Cost
Spud Gun Barrel Adapter Assm
Spud Gun Barrel Air Chamber Assm
Spud Gun Air Control Assm
Spud Gun Air Gauge Assm.
Spud Gun Drilling of Clean Out Cap
Spud Gun Handle Assm. with Electronics
Spud Gun Handle Assm
Spud Gun Piston Stopper Assm
Spud Gun Wiring Digram