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Old June 17th, 2010, 13:28   #12
Jimski's Avatar
Join Date: Jun 2005
Location: Montreal
be careful when changing the hop-up unit, sometimes you get a better performance with the original plastic one.I'd buy a metal unit and use it only when the stock one gets old.
also if it's a CA your spring guide should be metal already.

Last edited by Jimski; June 17th, 2010 at 13:31..
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