Gear box internals
Aluminum CNC O-Ring Nozzle For M4/M16
Upgrade Spring Guide Ver.2 Gearbox
Upgrade Aluminum Piston Head and Bearing
Upgrade Nylon Piston Head and Bearing
Upgrade Stainless Cylinder 451-550mm Barrel
Upgrade Stainless Cylinder 401-450mm Barrel
Upgrade Stainless Cylinder 301-400mm Barrel
Steel Gear Set Genuine Torque
Upgrade Steel Gear Set Super High Speed
Upgrade Steel Gear Set Original Ratio
Upgrade Steel Gear Set Super High Torque
Upgrade Shim Set
Steel Pinion Gear(D Shape)
Steel Pinion Gear(O Shape)
Upgrade Radial Ball Bearings 7mm
Upgrade Radial Ball Bearings 8m
Upgrade Self Lubricating Bushings 6mm
Upgrade Self Lubricating Bushings 7mm
Upgrade Self Lubricating Bushings 8mm
Upgrade 8mm Bearing Ver.2 Gearbox
Upgrade Motor Cage Ver.3 Gearbox
Upgrade Safety & Selector Levers SetFor AK
Upgrade Silver Plated Wiring For M4
Upgrade Nylon Piston - High Speed
Upgrade Polycarbonate Piston
Upgrade 3 Steel Teeth Nylon Piston
Upgrade 7 Steel Teeth Nylon Piston
Upgrade Full Steel Teeth Nylon Piston
Upgrade High Speed Full Steel Teeth Nylon Piston
Upgrade Nylon Tappet Plate For G36
Upgrade Nylon Tappet Plate For M4/M16
Upgrade Nylon Tappet Plate For AK
Upgrade Nylon Selector Plate For MP5
Upgrade Nylon Selector Plate For M4/M16
Upgrade Nylon Selector Plate For AK
Upgrade Nylon Selector Plate For G36
Upgrade High Torque Motor
Upgrade Hop-Up Bucking (50D)
Upgrade Hop-Up Bucking (70D)
Power Spring E90 Performance Center
Power Spring E100 Performance Center
Power Spring E120 Performance Center
Power Spring E130 Performance Center
Gear Box Spring Set Performance Center
Silent Piston Head And CNC Ver.2 Cylinder Head
Upgrade Spring Guide Ver 3 Gearbox
Upgrade Trigger For M4/M16