A skirmish-friendly power boost
The Evolution Power Spring E100 Performance Center is a high-torque AEG main spring tuned for builds around 330+ FPS. That places it right in the sweet spot for many UK skirmish setups looking for reliable, site-legal power.
Consistent by design
Precision wound in Italy, the E100 gives smooth, even compression for repeatable velocity shot after shot. Combined with a good hop unit and barrel, it delivers dependable range and accuracy.
Easy to fit
The spring is designed for standard AEG gearboxes and drops onto the usual spring guide during a rebuild or upgrade. Pair it with a reinforced piston and quality bearings to keep your gearbox healthy over the long term.
Dial it in to your site
Because site limits vary, always chrono your AEG after fitting a new spring. Our Kent-based repair and tech service can fit and test it for you, and there are more internals in our airsoft accessories range.
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