AS Tactical M120 Tune Up Spring
DetailsAS Tactical M120 Tune Up Spring
- Upgrad AEG Velocity to 375 - 400 FPS
- Rust and Corosion Resistant Material
- Compatible With Most Standard AEG Gearboxes
Installing an upgraded spring can greatly increase your AEG's velocity for FPS. Most AEGs can handle up to a M120 Spring with all other gearbox components remaining Stock. Professional Installation is Suggested for all internal upgrade parts.