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m-6 upgrade
OK I have some queastion 4 y'all
I have swiss arm M-6 s and I want to upgrade the spring to bring up the FPS
so my queastion is what kind of spring should I buy if I want it to bring FPS to maybe 410 FPS on .2 bbs
second how do i swich the spring??? I did take apart my m-6 to point where only had the tube that contains the spring. However I can't take apart the tube to take out the spring. Can any one help me with this???
thanks
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