I have been told by a very close souce to crimson trace products that they are indeed having fitting problems with their unit on the polymer kahrs, We have seen gaps when installed, off center peaces that should match etc. They are now aware of this issue and they are working fevorishly on a correction. but have told my sourxce that we are looking at at least 30 days before the correct unit is now available.
So, if u desire to buy one of these right now you are traveling at your own risk with the propper fit on your kahr. It is not the gun but the crimson trace unit.
Not tot ell anyone what to do, but before I would buy one, I would chekck with CTC to verify that the unit you are buying is the redesigned unit to pit properly and snugly on the kahrs.