I replaced the factory M120 spring in the SRC Falcon-W replica with a spring from Cyma, and to my surprise, I gained 30 FPS. How quickly it will wear out remains to be seen, but the first impression is quite good for the money. If you have a quick spring change system, there's nothing to lose.
M120 main spring model features a standard length of 15.5 cm and an irregular winding pattern. Constructed from steel wire.
Technical data
Material: steel
Length: 15.5 cm
Height: 1 cm
Weight: 10 g
Manufacturer: Cyma
| Material | Steel |
|---|---|
| Length | 155 mm |
| Weight | 10 g |
| EAN | 5902543077844 |
| Manufacturer code | CYM-08-037443 |
| Brand | CYMA |
| EAN |
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