hello, i'm noob.. here's my workhorse
spec:
Davidson Custom STI Custom Shop slide
Davidson Custom full marking .45 ACP Outer Barrel
Tokyo Marui Hi-Capa 4.3 Dual Stainless frame (chopped)
Airsoft Surgeon Pro-Mount for Docter sight
AIP Aluminium skidproof Thumb rest (right, customized for left)
AABB pistol grip (grey)
EDGI Custom 6.00 Inner Barrel for Marui Hi-Capa
KM Hop Up Bucking
Guarder Loading Nozzle
Action Aluminium Cylinder Bulb
3nity Spring Shock Buffer
AIP 120% Recoil Spring
AIP Blowback Housing Unit
AIP Hammer Set & Knocker
AIP Disconnector Set
AIP Short Trigger
Building Fire Liteweight Style Magwell
AIP Ambidextrous Cocking Handle
ACM Docter Sight (crappy)
the rest are marui capa 4.3 stock parts

(running at 305-315fps with 0.28gr bbs on green gas)