[CaptnJade]

Originally Posted by Drakker

The Hop-Up rubber is VSR compatible. So you can get a good rubber and it will help with accuracy. If your stock rubber doesn't seal well, FPS might go up too.

As for power, you can change the spring, but frankly, 370fps is plenty for a rifle of this type. It allows you to engage from closer since you have the same MED (minimum engagement distance) as everyone else, that's really useful if you play in heavy woodland where close engagement is frequent.

what kind of spring you suggest me to buy?