Parts...
4 x 18-8 Stainless Steel Pin-In Torx Button Socket Cap Screw, 4-40 Thread, 1/2" Length
4 x 18-8 Stainless Steel Pin-In Torx Button Socket Cap Screw, 8-32 Thread, 1/2" Length
1 x 18-8 Stainless Steel Metric Coiled Spring Pin, M3 Diameter, 30mm Length
Not sure yet what spring to use that would work well for the trigger...