This is a genuine VSR-10 compatible spring (outer diameter 10.5mm).
The genuine equivalent is indicated as D100 as a guideline.
Example: D85 spring = designed to be 85% of the stock ratio
D95 when using G spec
When using Prosna D105
*Even with the same spring, the initial velocity differs between G Spec and Pro Sniper, so we have listed the approximate values for each.
Springs, by their very nature, will inevitably "sag" with use, and the initial velocity will decrease compared to immediately after installation.
If you would like to make fine adjustments such as returning the initial velocity to its original value, please consider using the spring spacer, sold separately.
Precautions
Muzzle velocity may vary beyond the target range depending on the individual gun, its components, and its maintenance status.
Springs of D100 or larger are intended to be used with short barrels, etc. When installing, please adjust the initial velocity with a margin, measure it with a bullet velocity meter, and be sure to comply with regulations.
