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how to achieve 430 fps sr10

sr10 spring upgrade fps

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#1 myakup07

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Posted 10 August 2014 - 12:23 PM

Hello all,

Firstly, thanks to all those knowledgeable people who respond to these posts.

I want to shoot 390-400 fps with .25 with my sr10. Everything is stock except my km 425mm Tb. I was thinking a sp120 or an aftermarket m120 since kwa m120 are shorter than aftermarket springs.

thanks to anyone who helps

#2 tales

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Posted 10 August 2014 - 05:22 PM

M4 RIS, KM Head  Guarder SP130 .25s
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