Unicorn Airsoft M140 AEG Non Linear Spring (Green)

• Steel Construction Airsoft Spring
• M140 Power Up Spring
• Features a non-linear design with irregular pitches
• Reduces wear and stress points inside the AEG gearbox
• Enhances performance and reliability of the Airsoft electric gun
• "M" spring rates are based on rough meters per second using 0.2g BBs
• Expect around 100 M/S (328 FPS) +/- 5 M/S on an M100 spring
• FPS can vary considerably due to the entire build setup
• Suitable For AEG Airsoft Electric Gun Rifle