VSR M150 Upgrade Spring

The spring was of good quality and good value for money and has improved my sniper to where I need it to be

Good spring

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Best spring highly recommended specially for a vsr10 g spec

So far works great. I bought a Cyma VSR10 to upgrade. The internal spring was awful. I've replaced the hop and barrel and then brought this spring. Brought the speed out of the barrel up to about about 460fps/157ms after wearing in.