Bore Up Series upgrade part 
Polycarbonate Piston Head with Thrust Bearing is renewed to be more effective
Custom 6 holes ventilation design increase the stability during full auto shooting mode
It creates soft & quieter shooting sound than the sister part, Aluminum Version
Reinforced piston head will provide extra duration during rapid & prolonged firing
Recommended to use along with Upgrade Springs
As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed
Polycarbonate Piston Head with Thrust Bearing is renewed to be more effective
Custom 6 holes ventilation design increase the stability during full auto shooting mode
It creates soft & quieter shooting sound than the sister part, Aluminum Version
Reinforced piston head will provide extra duration during rapid & prolonged firing
Recommended to use along with Upgrade Springs
As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed
| SKU | GL-04-03 | 
|---|---|
| Item Weight (gram) | 15 | 
| Major Color | Black | 
| Built Material | Polycarbonate/Rubber | 
| Manufacturer | Guarder | 
| Hop-up | N/A | 
| Shooting Mode | N/A | 
| Gearbox Type | N/A | 
| Fit Battery Pack | N/A | 
| Bullet Type | N/A | 
| Pistol Power Source | N/A | 
 
                        
                       
 
 
               
               
               
               
              