I just want to be sure about bolt springs. There are only three bolt springs out there. The only difference is the length: small (stock), medium (L10) and long (FN). Is this correct? Thank you.
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Yes the only difference is length. This each spring has its own spring constang "k". The longer spring will be "softer" on paint while the short one will be "rougher" to paint. You will need the small spring for low fps (such as reball ~250ish) and the long one is for higher fps.
I like the red ones.
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