FPS-Softair

95 m/s FPS spring has been calibrated on 363 mm inner barrel and gearbox with type D cylinder (for barrels from 301 to 400 mm).Of course with shorter or longer barrel the performance will decrease or increase, therefore the…

FPS Reinforced Airsoft AEG Gearbox Spring Set for Ver.2

For Version 2 AEG Gearboxes (M4 / M16 / MP5 / M16 / PDW / G3 )

Features:
- Reinforced spring sets for most OEM brands
- 6 useful springs that are more likely to get…

The FPS ERGAL piston head is a great upgrade that will increase the efficiency of airflow through the cylinder. This piston head has ports on the front to push out the o-ring as it moves forwards, this ensures that all of the air…