Rocket Airsoft M150 AEG Spring - Japanese Black Steel airsoft pistol for beginners 320+ FPS with

320+ FPS with

Works with front rail systems (nothing attached)

This is the GEN 4 edition of the full frame Glock 17

1v LiPo type batteries: Valken 11

85mm Feeder Length (to fit magazine): 6mm Material: Aluminum 6061

Rocket Airsoft M150 AEG Spring - Japanese Black Steel airsoft pistol for beginners 320+ FPS withRocket Airsoft M150 AEG Spring Japanese Black Steel. One of our most popular airsoft upgrade springs! Very high quality steel made spring to get your gun running a high FPS. Fits in all standard gearboxes. This is your standard upgrade spring strength for upgrades. This is a non linear spring utilizing Japanese made steel spring material. Black color to differentiate spring types.