Try gun shops and gun shows.
Try Old Western Scrounger.
Try Old Western Scrounger
i have ordered grips for the heritage revolver. goto www.heritagemfg.com and choose the grips you like. they are not an exact fit but they work great. i would say they fit 99%. most of the parts will interchange between the rough rider traditional and most western six .22's.
Try e-gunparts.com
Bear Arms of Kent, WA, once had one for sale for $72. Otherwise, there is very little info out there about Kimel revolvers (much better know for their 9mm). this designed revolver is now made under heritage mfg. some slight differences.
http://www.gunpartscorp.com/forum/
You might try http://www.e-gunparts.com.
Numrich Arms Gun Parts Corp. West Hurley NY. is a good place to start
Numrich gun parts
Try e-gunparts.com
Gun shops, gun shows, want ads,