Only bolts I know of are supplied by the manufacturers standard and venturi. Venturi bolt is available from Smart Parts Europe
The same for the trigger frames Standard, 45 or Double. There are a couple of electro triggers available on your side of the pond, one being Centreflags Hyperframe.
Standard Spyder thread and expansion port thread.
I did note that some stores in the US where selling the T3 without the extended expansion chamber.
Basically bolt and trigger options are severely limited