B990 Posted February 22, 2009 Share Posted February 22, 2009 I have noticed that I can hear the pistons rolling back and forth when I shake the M4. Is that normal or has anyone noticed this with theirs. I am 99% sure it is assembled correctly and everything is tightened down. Quote Link to comment Share on other sites More sharing options...
02RC51 Posted February 23, 2009 Share Posted February 23, 2009 It's normal Quote Link to comment Share on other sites More sharing options...
Duggan Posted February 23, 2009 Share Posted February 23, 2009 good to go Quote Link to comment Share on other sites More sharing options...
sneakerfreak602 Posted February 28, 2009 Share Posted February 28, 2009 I'd be more concerned if they didn't move as there are pistons.lol. Your good to go. Quote Link to comment Share on other sites More sharing options...
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