Guarder SP170 Spring

The SP170 rating indicates a very high-tension spring designed to significantly increase your airsoft gun's muzzle velocity. It is intended for high-performance builds where you are aiming for maximum power output rather than standard field limits.

No, you should not install an SP170 spring in a stock gearbox. The high tension will likely cause immediate failure of stock gears, pistons, or the gearbox shell itself. This spring requires a fully upgraded, reinforced internal setup to handle the increased stress.

Yes, you will almost certainly need a high-torque motor to pull a spring of this tension. A standard motor will struggle to cycle the gearbox, which can lead to overheating, stripped gears, or a blown fuse.

While it is designed for standard AEG gearboxes, compatibility depends on the specific dimensions of your gearbox and the internal components you are using. Always verify that your specific gearbox shell is rated for high-tension springs before installation.

Installing an SP170 spring involves significant stress on your internal components, and improper shimming or alignment can lead to catastrophic failure. An experienced technician ensures the gearbox is properly tuned to handle the load, preventing damage to your replica.