Here are the parts that I used so far:
Shooter Design G17 custom slide and outer barrel
PDI 6.01 inner barrel
Nine Ball Hopup bucking
Guarder frame
Guarder 150% recoil spring & hammer spring
Guarder high output valves
SA magwell
Silverback RDS mount
Micro RDS
Gun Modify Zero Hammer
Parts that I am still debating:
Gun Modify adjustable trigger
SA Buffer pads
AIP BBU
AIP Mag Catch
Upgrade Valve Knocker