This has been my experience with Kahr CS as well. My early E-nickel K9 broke the slide back cover. They sent a free new replacement quickly. Years later, the slide release was showing unusual wear. One email later, a free replacement was on the way. Nice to see they're still at it. I haven't had any problems with any of my Kahrs for many years since then - other than breaking that plastic mag base. I ruled that my fault and replaced it and all the others with steel.
Byrd - thanks for reminding me why I haven't bought a G-43.