HI5-O Posted February 10, 2012 Share Posted February 10, 2012 I just got my Apex Tactical CAEK for my M&P Pro's (9&40). In one small baggy there is the slave pin and two coil springs. The baggy has a label saying, "2 Sear Springs included use only one (Comp)". The springs vary greatly in size (length & coil size) so which one do I use for the lightest pull? and what does each spring do? I'm still new to this M&P line but I like it. thanks. Link to comment Share on other sites More sharing options...
dsmw5142 Posted February 10, 2012 Share Posted February 10, 2012 Apex has a pretty good Youtube video on the installation of the kit. I think they explain all that if I remember right. Link to comment Share on other sites More sharing options...
Recoil45 Posted February 10, 2012 Share Posted February 10, 2012 (edited) Some guns have a large sear spring, some have small. Install the one that matches the size of the spring currently in the gun. Edited February 10, 2012 by Recoil45 Link to comment Share on other sites More sharing options...
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