Just picked up a CM9.
I've manually racked the slide 260 times as of this morning.
Why? If you go to the Kahr forums and follow the sage advice about checking the magazine springs, you should have no issues
#4. Now, with an empty gun and no magazine, rack the slide numerous times, this will help recoil spring set without the bang thing happening. Hand racking never replaces the actual "bang" thing but it does not hurt a thing either.