Most standard S1 rifles leave the factory at 400 FPS, this official upgrade spring can edge up the power to 450 FPS. Final velocity ratings and long range accuracy depend on the quality of all the internal components, stock parts are tough however uprated components may need to be installed on customised rifles for long term reliability.
- Compatible with Ares Amoeba Striker rifle
- High tensile steel component
- Upgrade internals to withstand the increased power
- Official accessory
- Brand: ARES