Prometheus Non-Linear Upgrade Spring for Airsoft AEGs (Model: MS120 / Emerald) Read more..
Manufacturer: Prometheus
Velocity: Approx. 400FPS
Compatibility: For Tokyo Marui, EMG, Matrix, and Other Standard Tokyo Marui-Spec Airsoft AEG Gearboxes
Material: Steel
NOTE: Velocity (FPS) estimate based on average power output. Exact FPS result may vary based on alignment, installation, inner barrel, cylinder and other factors
Prometheus Non-Linear Upgrade Spring for Airsoft AEGs (Model: MS120 / Emerald)
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