Excellent quality spring made from high performance oil-tempered Japanese SWOC-V steel. This type of steel is generally used in military weaponry and in car engines. The M110 version of this spring was tested in an AEG for over 200,000 shots with only a 0.5% shrinkage in length of which happened in the first 1000 shots (normal spring shrinkage).
* When choosing an appropriate spring you must match it to the cylinder type and length of the innner barrel.
Spring Rating: M130 / 425FPS
Outer Diameter: 14.65mm
Inner Diameter: 11.75mm
Wire Thickness: 1.4mm
These springs are rated with the following test setup:
- 3/4 cylinder
- Bearing on spring guide, no bearing on piston head
- No AOE correction
- 260mm ZCI inner barrel
- Retro Arms hop chamber (set to zero)
- Maple Leaf Macaron 60
- 0.2g BB