Guarder Bore-Up Polycarbonate Piston Head with Bearing Combat interchange four different sizes speed

interchange four different sizes speed buffers to achieve your perference

Front and Rear Fluorescent Sight

removable front and rear sights

120 rounds Polymer Magazine

- Length: 790mm / 880mm (Extented)

Guarder Bore-Up Polycarbonate Piston Head with Bearing Combat interchange four different sizes speedBore 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 &