Upgrade Gearbox built from the ground up in Austria compatible with a Perun programmable trigger unit with a button trigger sensor.
Build List:
ETU Trigger Unit
PERUN ETU++ Extension (optional)
Umbrella Hair Trigger Tuning
Umbrella Air Nozzle Aluminium
POM Cylinder Head
3/4 Brass Cylinder
Umbrella Piston with AOE Correction
Umbrella Piston Head
Umbrella 8mm High Strength Bearings
G&G Enhanced Tappet Plate
Umbrella ARL
G&G Enhanced Gearbox Shell
G&G Spring Guide
DSG Build:
SHS DSG
Carbine:
Umbrella Hardened Steel SSG Gearset
Compatibility: AEG V2 (including G&G, VFC, and more) Standard G&G MOSFET Compatible
G&G: ARP9, ARP556, SR15, SR30 and most others.
Contact us to find out if your gun is compatible.
Upgrade gearboxes require professional installation. Improper installation can cause damages.
