I can attest to Ruger’s excellent customer service. About ten years ago I bought a used MkII at a gun show for I think around $75. The reason is was so cheap was because it looked like someone spilt a chemical on the barrel that ate off the bluing. Otherwise, the pistol looked great. I sent it to Ruger to have it reblued. They did an excellent job bluing it, replaced all springs, extractor and a new firing pin. My cost, $25. And they paid the return shipping.
I had $100 into the pistol. Shot it for 5 years, sold it for $200. One of the few times I came out ahead on a firearm. It paid off for Ruger. Since that time I have bought four new Ruger firearms.