[SPARK] Japanese-made main spring for electric guns

SPARK's original main spring for electric guns is manufactured by a famous domestic spring manufacturer, achieving high quality despite its low price.
We use the highest quality piano wire/oil tempered wire, which has extremely high fatigue resistance, and is highly resistant to any noticeable wear.

By ensuring the appropriate air capacity for the barrel length, it delivers power close to the M○○ model number.

It is also used in SPARK custom products, and is designed to have the M90 ​​as a reference point. If the air is properly balanced and there are no air leaks, it is designed to produce approximately 0.8J of power, but this will vary depending on the characteristics of the model and whether or not the sector is cut, so please check the settings of your own electric gun before selecting the rate.

*For models with sector cuts (such as the G&G GC16 series) or short-stroke gearboxes such as CAT, the air capacity is reduced when cocking, so a spring with a higher rate than usual is required.

*When purchasing, we recommend that you prepare two or three types of springs with similar rates in order to fine-tune the settings.

*Please note that the M85 and M105 springs have a long contact length.

[Notes]

This product is intended for advanced users. The model number M○○ is a reference format for muzzle velocity values, and not all guns will necessarily achieve muzzle velocities close to the model number. Be sure to check the bullet velocity before making adjustments. Models with extremely short barrel lengths, such as approximately 180mm or less, may experience a flow velocity condition and may not achieve the power indicated by the model number.