Systema Taper Spring 300% for PSG-1 AEG
Made with Oil Tamper Wire Irregular Pitch Spring
100% Japan made Upgrade Spring
Design for Marui's PSG-1 Airsoft AEG
Actual results depend on barrel length, workmanship, air nozzle seal, and other technical factors Upgraded Power Level: Ultra High Power Upgraded
Power Range: 480 - 530 FPS