Today I received the Wolff 5# striker spring, I finally got around to ordering. My CM9's trigger pull weight with the origional factory striker spring registered 7.1 on my gauge. After the new spring was installed, the trigger pull registered between 6.2 to 6.4. I feel the difference when dry firing. However, it does NOT feel to weak to be safe as my EDC. I'm looking forward to a range trip and seeing how it performs. I have posted pic's of my "all in the same whole" 2" - 2.5" groups with 50 rounds at 15 yards. Those pic's are around the forum somewhere. Maybe I can get those groups down to 1.5" - 2" groups with 50 rounds at 15 yards. Possibility, finally doing the "Lethal Weapon" smiley face at 15 yards that I promised Jocko I would not post pictures of. Anyway, I am going to carry my G19 until I can get to the range and confirm there are no light strikes and that everything is copacetic.
BTW, I did replace the mainspring housing on my new Kimber with a 25 lpi checkered metal one and replaced the 23# mainspring with a match grade 19#. Making an oh so sweet shooter even sweeter.