Yeap, that is part of the Kahr designs. I also in my notice some thin lines in the plastic frames, as I checked and inspected concluded that was part of the molding process. Glad the issue was resolved. Welcome to the forum.
A Conceal Carry Handgun Must Meet a Minimum of Four Conditions:
1) It must be utterly reliable.
2) It should be compact enough to be carried concealed for long periods of time.
3) It should have a very simple operating drill.
4) It should fire a cartridge of sufficient power.