Guarder Aluminum Ventilation Piston Head w/ Bearing Sight - Package includes: E&L AK104

- Package includes: E&L AK104 PMC-A AEG

- 10 inch (260mm) outer barrel plus tri lug type 140mm flash hider & 110mm Barrel Extension

- Black Color Version with marking

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Guarder Aluminum Ventilation Piston Head w/ Bearing Sight - Package includes: E&L AK104Essential part for upgrading your Airsoft AEG Aluminum Piston Head with Thrust Bearing is renewed to be more effective Head resistant O Ring Custom 8 holes ventilation design increase the stability during full auto shooting mode It creates tremendously crispy shooting sound compared to sister part, Duracon Version Reinforced piston head will provide extra duration during rapid & prolonged firing Recommended to use along with Upgrade Springs As always,