Custom grip maker Craig Spegel of OR might be of help. At the very least, he might know of a custom grip maker who does wood grips for Kahr brand pistols.
Spegel is known for J frame Boot Grips & a few grips for Hi-Power semi auto pistols.
Cylinder & Slide of NE is a highly rated pistolsmith. They make custom Kahr pistols with wood grips. They might send you the grip maker or vendor information.
Clyde
www.CraigSpegel.com www.cylinder-slide.com